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Posted on by Khibby

I am building an app that in theory will open the existing record on the SP list if it exists. If it does not exist I can add a new record.

This is what I have in the form Item:

If(IsBlank(LookUp(Gate1,ThisRecord.ID = galProjects.Selected.ID)),FormMode.New)
 
What am I missing?
 
Thanks in advance for any and all guidance!
Kim

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Building Power Apps

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Pstork1 68,898 Most Valuable Professional on at

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I think you want IsEmpty() instead of IsBlank(). Is Blank is used with a string, Is Empty is used with a record or table. The output of your Lookup is a record, not a string. It would also work if you have the Lookup return a single string field like Title. Like this

If(IsBlank(LookUp(Gate1,ThisRecord.ID = galProjects.Selected.ID,Title)),FormMode.New)

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Mitanshu 1,650 Moderator on at

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The FormMode.New is not a valid value for the Item property. Instead, Item expects a specific record or Blank() to determine whether the form will open an existing record or allow creating a new one.

Item property of Form:

If( IsBlank(LookUp(Gate1, ID = galProjects.Selected.ID)), Blank(), LookUp(Gate1, ID = galProjects.Selected.ID) )

Setting Form Mode

To determine whether the form should be in New or Edit mode, use the OnVisible or OnSelect property of your screen or button to set the form's mode explicitly.

If( IsBlank(LookUp(Gate1, ID = galProjects.Selected.ID)), NewForm(Form1), EditForm(Form1) )

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Khibby 60 on at

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I've tried this method but keep getting a type mismatch error. This is what I have OnSelect of the button:

If(IsBlank(LookUp(Gate1, ProjectID = galProjects.Selected.ProjectID)), NewForm(frmGate1), EditForm(frmGate1))

Apparently the data type in the Gate1 list is text and the gallery holds records. How do I tell it to search the record for that text string?

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Khibby 60 on at

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I was able to fix the error by changing SP column to ProjectID.Value. So the whole thing is:

If(IsBlank(LookUp(Gate1, ProjectID.Value = galProjects.Selected.ProjectID)), NewForm(frmGate1), EditForm(frmGate1));Navigate('Gate-1')

However, my form isn't loading the data that exists on Gate1.

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timl 36,634 Super User 2026 Season 1 on at

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>> However, my form isn't loading the data that exists on Gate1.

With regards to this issue, have you set the Item property of your form to this?

LookUp(Gate1, ProjectID.Value = galProjects.Selected.ProjectID)

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Khibby 60 on at

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Yes, that's correct.

Button on Screen1 - OnSelect:

If(IsBlank(LookUp(Gate1, ProjectID.Value = galProjects.Selected.ProjectID)), NewForm(frmGate1), EditForm(frmGate1));Navigate('Gate-1')

Form on Screen2 (frmGate1) Item:

LookUp(Gate1, ProjectID.Value = galProjects.Selected.ProjectID)

Thank you for your continued support on this! It's much appreciated.
Kim

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timl 36,634 Super User 2026 Season 1 on at

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Hi @Khibby

If none of the fields are loading on the form, I'd suggest going to the Fields link in the properties of the form and re-adding the cards for the fields. That should reset things and may help.

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