Hi @Riya_Bansal
Can you create a new project and see if you are facing the same issue?
If so can you share the xaml you have issue with?
Alternately, close all projects and uipath studio and try deleting the uipath.system.activities folder from the following location C:\Users\Username.nuget\packages\uipath.system.activities . Then reopen and create a global variable and check
Cheers