web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

Welcome to the Power Platform Communities
News and Announcements icon
Community site session details

Community site session details

Session Id :
Power Platform Community / Forums / Power Apps / How to run a flow from...
Power Apps
Answered

How to run a flow from Power Apps which still runs for Blank Values in Drop downs.

(1) ShareShare
ReportReport
Posted on by Community Power Pla... Microsoft Employee

Hi all,

 

I have a flow running from Power apps when the user presses a submit button.

 

There are 5 dropdowns for project choices and then 5 dropdowns for the corresponding percentage (Allocation) to each project. The user must first fill in the drop downs and select a project from each drop down, and then select the Allocation from the drop down next to it.  Now it can be the case that not all 5 are selected, therefore I set AllowEmptySelection to true so the user can just fill in selections for 3 projects for example, instead of all 5, therefore 2 dropdown boxes are left blank.

 

I therefore changed my formula to:

 

'133-TimeAllocationMasterFlow'.Run(If(IsBlank(paEmployee.Text),"",paEmployee.Text),If(IsBlank(paAllocation1.Selected.Value),"",paAllocation1.Selected.Value),If(IsBlank(paProject1.Selected.Name),"",paProject1.Selected.Name),If(IsBlank(paAllocation2.Selected.Value),"",paAllocation2.Selected.Value),If(IsBlank(paProject2.Selected.Name),"",paProject2.Selected.Name),If(IsBlank(paAllocation3.Selected.Value),"",paAllocation3.Selected.Value),If(IsBlank(paProject3.Selected.Name),"",paProject3.Selected.Name),If(IsBlank(paAllocation4.Selected.Value),"",paAllocation4.Selected.Value),If(IsBlank(paProject4.Selected.Name),"",paProject4.Selected.Name),If(IsBlank(paAllocation5.Selected.Value),"",paAllocation5.Selected.Value),If(IsBlank(paProject5.Selected.Name),"",paProject5.Selected.Name)

 

However, it does not accept this. The issue is with the project dropdown i.e., paProject1/2/3/4/5, not the allocation as in power automate I have allowed 0% to be accepted for the allocation.

 

Does anyone know how to run a flow for empty/blank drop downs.

 

Thanks.

 

 

Categories:
Building Power Apps
I have the same question (0)
  • iAm_ManCat Profile Picture
    iAm_ManCat 18,256 Most Valuable Professional on at

    Try replacing them with Blank() values which should be interpreted correctly:

    '133-TimeAllocationMasterFlow'.Run(
 If(IsBlank(paEmployee.Text), Blank(), paEmployee.Text), 
 If(IsBlank(paAllocation1.Selected.Value), Blank(), paAllocation1.Selected.Value), 
 If(IsBlank(paProject1.Selected.Name), Blank(), paProject1.Selected.Name),
 If(IsBlank(paAllocation2.Selected.Value), Blank(), paAllocation2.Selected.Value),
 If(IsBlank(paProject2.Selected.Name), Blank(), paProject2.Selected.Name), 
 If(IsBlank(paAllocation3.Selected.Value), Blank(), paAllocation3.Selected.Value),
 If(IsBlank(paProject3.Selected.Name), Blank(), paProject3.Selected.Name),
 If(IsBlank(paAllocation4.Selected.Value), Blank(), paAllocation4.Selected.Value),
 If(IsBlank(paProject4.Selected.Name), Blank(), paProject4.Selected.Name),
 If(IsBlank(paAllocation5.Selected.Value), Blank(), paAllocation5.Selected.Value),
 If(IsBlank(paProject5.Selected.Name), Blank(),paProject5.Selected.Name)
)

     

  • Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    Hi,

     

    Thank you for your response.

     

    Tt says there is an invalid number of arguments, which is an error on my side of the flow I need to fix. Once done, hopefully this should work.

     

    Thanks.

  • Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    Hi,

    When I try to submit my PowerApp now, it says there is an invalid parameter for 'text 4' i.e. the drop down field that was left blank. Even though AllowEmptySelections is set to true and Default is " "

     

    Any ideas?

  • iAm_ManCat Profile Picture
    iAm_ManCat 18,256 Most Valuable Professional on at

    Set the default to Blank() ? Is there any reason you set it to a single space? a single space is not an Empty Selection

  • Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    I've set the default to Blank() but it still comes up with the same error message

  • iAm_ManCat Profile Picture
    iAm_ManCat 18,256 Most Valuable Professional on at

    Can you run a Monitor session to get details of why it thinks its invalid? Should show in the row where it errors what's wrong

  • Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    It's strange, it says there is no error. I think it is because it doesn't go through when I press submit as it fails. Therefore it doesn't get recorded as an error.

  • iAm_ManCat Profile Picture
    iAm_ManCat 18,256 Most Valuable Professional on at

    Can you provide the information from the Monitor session that is sent during the onClick event? There should be at least one row for the onclick and then subsequent attempt to patch.

  • Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    If you see the attached that's what I get from the Monitor session. The Button 6 OnSelect is the submit button which when clicked runs the flow. It says success as the result but it doesn't work. Still get error message in play mode of the app

    monitor.png
  • iAm_ManCat Profile Picture
    iAm_ManCat 18,256 Most Valuable Professional on at

    another question around this - was it the Default or the DefaultSelectedItems that you modified? and is it a text field?

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

News and Announcements

Welcome to the Power Platform Communities

Quick Links

Introducing the 2026 Season 1 community Super Users

Congratulations to our 2026 Super Users!

Kudos to our 2025 Community Spotlight Honorees

Congratulations to our 2025 community superstars!

Congratulations to the March Top 10 Community Leaders!

These are the community rock stars!

Leaderboard > Power Apps

#1
11manish Profile Picture

11manish 530

#2
WarrenBelz Profile Picture

WarrenBelz 459 Most Valuable Professional

#3
Haque Profile Picture

Haque 314

Last 30 days Overall leaderboard

Featured topics

Auto-Populate field Power Pages
Gallery Tabs - Show or Hide Tabs based on Field Value
How to patch multiple records at once
Enable Copilot for end users in model-driven apps
Question for everyone : How are you using Create Text GPT in AI Builder?
Community content - sample components, blogs etc. - Link to this page (http://aka.ms/PCFdemos)
Welcome to the Power Apps forum!

Product updates

Microsoft Power Platform Community release plans