Component Fill Not Changing With The Variables

[Charbel_kh]

Hi, I have a PowerApps application where I set certain variables to specific colors at the start of the app. Subsequently, I apply these variable values to fill some labels. For about a month, everything worked perfectly. However, today, when I opened the app to make edits, I noticed that the labels' fill colors no longer change based on the variables. The labels remain black, but if I make changes to the fill formula and then revert them, the correct color appear. It seems that the label fill is not refreshing when the variables change. Does anyone know what might be causing this issue?

  

[LuizVicente]

Looks like the variable wasn't initialized correctly... 🤔
Any chance of getting a better debug with the "Monitor" tool?

[Charbel_kh]

The monitoring tool did not provide any helpful information. The only record displayed regarding the App.OnStart property returned a success message. Regardless, I was able to resolve the issue by setting a Boolean variable, X, to true at the start of the application, and then at the end of the OnStart property, I set it back to false. In the Fill property of the label, I replaced the old formula, 'RGBA(Theme.ColorA1.R, Theme.ColorA1.G, Theme.ColorA1.B, Theme.ColorA1.A)', with the following code:
"If(X,
    Color.Transparent,
    RGBA(Theme.ColorA1.R, Theme.ColorA1.G, Theme.ColorA1.B, Theme.ColorA1.A)
)"
This new code ensures that the Fill property changes when the X variable transitions from true to false, which occurs only after the initialization of the Theme variable is complete.

[Charbel_kh]

I'm not sure why this suddenly happened, but I don't believe the issue is related to variable initialization. Attempting to change the variable value later in the app doesn't have any effect, as the colors still remain black.

[adedapo · Accepted solution]

Theme is now a keyword in Power Apps with the introduction of App.Theme.

To resolve your issue, do this:
1. Change the variable from Theme to something else like Theme1
2. Use the search and replace tool to change all references of Theme.Color to Theme1.Color
3. Run App.OnStart.

[Charbel_kh]

🙄
This is becoming so frustrating. This is not the first time that Microsoft releases an update and changes old stuff or introduces new features and suddenly my app stops working as intended.
Anyways thanks for your solution, it worked.