Power Apps Studio with errors

[ghuerren]

Hello folks.

If I use studio versions bellow to edit my app I get lots of runtime errors, specially with Date formulas, like:

Text(DateAdd(ThisItem.DataHoraTakeOffHHMM,TimeZoneOffset(),Minutes), "[$-en-US]dd/mm")

Error: his formula uses scope witch is not presently supported for evaluation. Date Type: text

Versions with problem in Red, and good one in green (attachment).

So, my question is:

- Will the erros be fixed automatically in the next studio versions our shall I adapt all the code to the new studio version syntax?

Im getting worried as im using the oldest version available in the list.

Tx

[RandyHayes]

@ghuerren 

What you are referring to are not errors.  They are messages from the formula editor.

Anytime you refer to ThisItem in a formula, that implies that you are basing your formula on a table record.  Since you are in design mode and not play mode, the formula editor has NO idea what record from the table to use to evaluate your formula.

This has been the case for as long as I can remember since the formula editor evaluation feature was introduced.

I hope this is helpful for you.

[ghuerren]

tx @RandyHayes for the reply. 

To just clarify, why i see the Runtime erros only in the studio versions i presented in the JPG ?

Can you please tkae a look on the new attachments in thie message, please? 

Tx a lot!

[RandyHayes · Accepted solution]

@ghuerren 

Yes, those are errors for runtime.  Your original message focused on the "This formula uses scope..." message - which is completely normal.

As for the real runtime errors you have, this is two things to consider:

1) First, a general statement - you are using .SelectedText which is a deprecated property.  You should use .Selected instead and then the column name of your items source that you want.

2) If the dropdown has nothing selected, then the DateTimeValue is going to fail (from a runtime evaluation standpoint).  You should Coalesce your formulas to account for empty/blank values,

ex. Coalesce(yourCurrentFormula, "")  this will evaluate to a blank label if nothing is selected.

[ghuerren]

Thanks very much for using your time to solve my error @RandyHayes 

Well, its a kind of peculiar problem.

When i click one the formula the error goes away from the list.
After a few seconds it comes back.

I tried to use both considerations you made, but without success. 

The most strang 4 me is that wiht older version of studio I get no errors at all.

[RandyHayes]

@ghuerren 

Yes, you will see that error do that.  It is only significant from a runtime perspective.  I always recommend accounting for empty, blank or invalid values in formulas (i.e. things that are not set yet - as in the case of your dropdown).  

As for your observation about the older PowerApp versions, yes...that did happen to change a few versions back.

Personally I say it's a good thing, because, not accounting for invalid/blank conditions are the type of things that cause the app to fail in play mode.  So, having the designer point them out is a welcome thing (at least for me).

[ghuerren]

Dear @RandyHayes .

I finally understand whats going on.

Coalesce did the trick.

Tx a lot!