Assign: Expression Activity type 'VisualBasicValue`1' requires compilation in order to run. Please ensure that the workflow has been compiled1

[vanithavs]

I have code like DateTime.ParseExact(Doc_Date2.toString(), “d MMMM yyyy”, Globalization.CultureInfo.InvariantCulture).ToString(“yyyy.MM.dd”)

Doc_Date2 = 2 June 2023 I need 2023.06.02 But am getting error like
Assign: Expression Activity type ‘VisualBasicValue`1’ requires compilation in order to run. Please ensure that the workflow has been compiled.
This formula is working in Windows legacy, but is not working in Windows.
Please Help me anyone to solve this issue.

[Sudharsan_Ka]

HI @vanithavs

Can you replace your doble quotes in the expression manually and check once again?

Visual basic workflow compilation error

Hi, In windows legacy, it seems double quote is normalized and any double quote characer is accepted. However, at this time, in windows (.net6) ,in fact, only " (0x22) is accepted to express string literal. To make matter worse, it seems to occur only compiling. (Expression validator don’t raise an alert.) FYI, the following is sample for reproducing. The first Assign uses " 0x22 and second Assign uses “ and it fails in compiling. Sample20221013-2.zip (2.1 KB) [image] Regards,

Regards
Sudharsan

[Gokul001 (Gokul Balaji)]

Hi @vanithavs

Check out this tutorial

Troubleshooting Guide : Conversion from Windows-Legacy project to Windows project

This topic describes troubleshooting guide regarding conversion from Windows-Legacy project to Windows project as of Dec 2022. Hope this helps those who face these problems. 1 Quick Reference by Error Messages, Situation etc. Phase Error message / Situation Reference Open project foobar.xaml: Cannot create unknown type’{clr-Namespace:UiPath.foo.Activities;assembly=UiPath.bar.Activities}ActivityName’. 2.2 Missing Activities package OR 2.3 Missing activity Development Unable to set pro…

Regards
Gokul