I am trying to use with function on process dashboard, i tried very simple expre

Hi Stefan ,
I tried with wrapping my variable with tostring, but this time also same error.
my requirement is
I have created process dashboard on master process. and i am just maintaing ID of database row in master process. so to show information on process dashboard i am using query rule, as i need to show all field from database on dashboard i am using with function and storing cdt in local variable and each time using same CDT to show filed, by using this approach i dont need to use query rule each time.

Hi Stefan ,
I tried with wrapping my variable with tostring, but this time also same error.
my requirement is
I have created process dashboard on master process. and i am just maintaing ID of database row in master process. so to show information on process dashboard i am using query rule, as i need to show all field from database on dashboard i am using with function and storing cdt in local variable and each time using same CDT to show filed, by using this approach i dont need to use query rule each time.