Error -2147352567 - Field based on expression can't be edited

[mcdhappy80]

I have changed the source of one variable in mt program
and when I try to assign it to forms control I'm getting this error.
Can someone explain what this error means?
Thank You

 

[RuralGuy]

Are you setting the ControlSource of your Control to point to the variable? What do you mean by "changing the source of a variable"?

 

[mcdhappy80]

Are you setting the ControlSource of your Control to point to the variable? What do you mean by "changing the source of a variable"?

The variable was initially getting its value from one field in the record set I was opening during runtime. I have changed that and now the variable receives value from two concatenated record set fields ( txtMyVar = rs![field1] & " " & rs![field2]).

I've found out what was causing this.
On my form I have a field which data source I've changed (from db field) to be an expression, and then I code I tried to change the value of that control.

 

[RuralGuy]

It sounds like you are now past this issue. Great!