when analyzing my project, I keep getting an ST-DBP-020 error for each Replace Text activity that I am using.
The automation works anyway. Any idea why I am still getting them?

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If you open the workflow analyzer settings, you will find the code and description of warnings.

In the UiPath studio ribbon, click analyze file dropdown and select workflow analyzer settings.

As per your code - It is Undefined Output Properties.
It means

The undefined property indicates that a variable has not been assigned a value, or not declared at all.

Karthik Byggari

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Hi @KarthikByggari,
thank you for the quick answer. I know the description of the error. I just don’t know why it comes up in this particular instance.
Here is a screenshot of the activity. I don’t know where a definition would be missing.
Replace Text

Can you check if the firstname is declared and initialized.

I am using StudioX and loaded the corresponding Excel file with Use Excel Resource.
How do I declare and initialize the variable? I think I haven’t done that in other StudioX projects neither.