Invalid number of arguments in Power apps when setting inputs to optional

(1) Share

Report

Posted on by FL-19021510-0

In power automate, i have connected a power app using "When Power Apps calls a flow (V2)", and in this action i have 15 inputs. 9 of those are required and 6 are made optional.

In my power app button, i have:

downtimecommunicationspmtest.Run(Title_1.Text, Substitute(Beschreibung_1.Text, Char(10), "<br/>"), Applikation_1.Selected.Value, Substitute(Impact_1.Text, Char(10), "<br/>"), Text(DateValue1_1.SelectedDate, "yyyy-mm-dd"), Text(DateValue2_1.SelectedDate, "yyyy-mm-dd"), Text(Time(Value(HourValue1_1.Selected.Value), Value(MinuteValue1_1.Selected.Value), 0), "hh:mm"), Text(Time(Value(HourValue2_1.Selected.Value), Value(MinuteValue2_1.Selected.Value), 0), "hh:mm"), Region_1.Text, If(Beschreibung_2.Text="", Blank(), Beschreibung_2.Text), If(Beschreibung_3.Text="", Blank(), Beschreibung_3.Text), If(Beschreibung_4.Text="", Blank(), Beschreibung_4.Text), If(Beschreibung_5.Text="", Blank(), Beschreibung_5.Text), If(Beschreibung_6.Text="", Blank(), Beschreibung_6.Text), If(Beschreibung_7.Text="", Blank(), Beschreibung_7.Text)
); ResetForm(Form1_1); Navigate(Erfolgreich, ScreenTransition.Fade);

however this gives me an error saying "Invalid number or arguments: Received 15, expected 9-10. 

receiving 15 seems to be right as those are the number of inputs but how come, it only expects the required options and not the optional fields as well.

Categories:

Building flows

I have the same question (0)

All responses (8)

Answers (0)

Sort by

Suggested answer

Haque 3,653 on at

Like
a
(0)

Report
Copy link

Link copied!
Hi @FL-19021510-0,

Pass Blank() when the control seems to be empty:

If(Beschreibung_2.Text = "", Blank(), Beschreibung_2.Text)

Here is the simplified one:

downtimecommunicationspmtest.Run( Title_1.Text, Substitute(Beschreibung_1.Text, Char(10), "<br/>"), Applikation_1.Selected.Value, Substitute(Impact_1.Text, Char(10), "<br/>"), Text(DateValue1_1.SelectedDate, "yyyy-mm-dd"), Text(DateValue2_1.SelectedDate, "yyyy-mm-dd"), Text(Time(Value(HourValue1_1.Selected.Value), Value(MinuteValue1_1.Selected.Value), 0), "hh:mm"), Text(Time(Value(HourValue2_1.Selected.Value), Value(MinuteValue2_1.Selected.Value), 0), "hh:mm"), Region_1.Text, Coalesce(Beschreibung_2.Text, Blank()), Coalesce(Beschreibung_3.Text, Blank()), Coalesce(Beschreibung_4.Text, Blank()), Coalesce(Beschreibung_5.Text, Blank()), Coalesce(Beschreibung_6.Text, Blank()), Coalesce(Beschreibung_7.Text, Blank()) ); ResetForm(Form1_1); Navigate(Erfolgreich, ScreenTransition.Fade);

NOTE: Using Coalesce() is a bit cleaner than If(..., Blank(), ...) — it returns the first non‑blank value, so if the text input is empty, it passes Blank() automatically.

Suggestion: Could you please use "Insert Code Snippet" when you post code block?

I am sure some clues I tried to give. If these clues help to resolve the issue brought you by here, please don't forget to check the box Does this answer your question? At the same time, I am pretty sure you have liked the response!

Was this reply helpful? Yes No
FL-19021510-0 26 on at

Like
a
(1)

Report
Copy link

Link copied!

Unfortunately the same issue persists. Its as if making inputs optional just removes it as an argument?

If I make the options required, the app works, but fails after I initialize it as I have blank fields. So what does optional even do?

Was this reply helpful? Yes No
Haque 3,653 on at

Like
a
(1)

Report
Copy link

Link copied!
Hi @FL-19021510-0,

Let's have check from two sides:

1. In Power Apps, you must still pass all arguments. For optional ones, pass Blank() (or Coalesce(control.Text, Blank())) as we did earlier.

2. In Power Automate, check for nulls before using the parameter. Example:

if(empty(triggerBody()?['optionalParam']), 'default value', triggerBody()?['optionalParam'])

Let me know if it helps.

Was this reply helpful? Yes No
11manish 3,333 on at

Like
a
(1)

Report
Copy link

Link copied!

try below :

downtimecommunicationspmtest.Run(
Title_1.Text,
Substitute(Beschreibung_1.Text, Char(10), "<br/>"),
Applikation_1.Selected.Value,
Substitute(Impact_1.Text, Char(10), "<br/>"),
Text(DateValue1_1.SelectedDate, "yyyy-mm-dd"),
Text(DateValue2_1.SelectedDate, "yyyy-mm-dd"),
Text(Time(Value(HourValue1_1.Selected.Value), Value(MinuteValue1_1.Selected.Value), 0), "hh:mm"),
Text(Time(Value(HourValue2_1.Selected.Value), Value(MinuteValue2_1.Selected.Value), 0), "hh:mm"),
Region_1.Text,
{
Beschreibung_2: If(IsBlank(Beschreibung_2.Text), Blank(), Beschreibung_2.Text),
Beschreibung_3: If(IsBlank(Beschreibung_3.Text), Blank(), Beschreibung_3.Text),
Beschreibung_4: If(IsBlank(Beschreibung_4.Text), Blank(), Beschreibung_4.Text),
Beschreibung_5: If(IsBlank(Beschreibung_5.Text), Blank(), Beschreibung_5.Text),
Beschreibung_6: If(IsBlank(Beschreibung_6.Text), Blank(), Beschreibung_6.Text),
Beschreibung_7: If(IsBlank(Beschreibung_7.Text), Blank(), Beschreibung_7.Text)
}
);
ResetForm(Form1_1);
Navigate(Erfolgreich, ScreenTransition.Fade);

Better to use JSON for so many parameters

Was this reply helpful? Yes No
FL-19021510-0 26 on at

Like
a
(0)

Report
Copy link

Link copied!

So i used @11manish's solution in the power App for the button and created compose actions for each optional field and made the input according to @Haque. I no longer get any errors from Power App, however the end product (Viva engage post) returns the optional fields as blank even if text is given.

I checked the flow history, and all the compose actions do not receive ('""') blank as an input and thus outputs blank. Was using compose actions the right idea or was I supposed to implement your code elsewise @Haque?

Was this reply helpful? Yes No
11manish 3,333 on at

Like
a
(0)

Report
Copy link

Link copied!

FL-19021510-0 good to know that your issue is resolved. As per my current analysis, compose action is right to use here.

Was this reply helpful? Yes No
FL-19021510-0 26 on at

Like
a
(1)

Report
Copy link

Link copied!

Would you happen to know why the power apps is giving Blanks as answers to the fields even though text is given? I've checked the variable names and everything and they all seem to match...

Was this reply helpful? Yes No
Haque 3,653 on at

Like
a
(0)

Report
Copy link

Link copied!

Hi @FL-19021510-0,

What do mean by "why the power apps is giving Blanks as answers to the fields even though text is given?" - is this sometihng the Blank you get in flow once passed from PowerApps. Could you please clarify - poissbly with screenshot?

Also, it is helpful for us and community if you please mark (first) question answer verified before coming related or next problem in the same thread.

Thanks.

Was this reply helpful? Yes No