Editing structure datatype

Editing structure datatype

Dear Sirs,
I need explanations regarding behavior of structure datatype
I have created structure datatype, named Info, which got only one structured element named "label".
Next I created to variables of type Info - named G2 and G3.
Next I add another structure element named "status" to structure type "Info".
When I look at variable list, "status" was added to G2 and G3, but they was gray. When I select it, nothing appears into properties window.
in the other way, when I create new variable of type "Info", named G4, the "status" item was presented, and was able to edit its properties.
I have the following questions:
- if I change the structure datatype, is there any way to update ALREADY created structure variable?
- if I change the structure datatype, should I delete all variable of the same datatype, and recreate them again (by the way I copy the G2 & G3 variables in clipboard, edit the structure datatype, past the variable again - this do not solve the problem)?
- what is the recommended editing procedure when it comes to user-defined structure datatype?
Best regards,
yolov

This is a migrated post! Originally posted on 08.07.2013 by user yolovs. Please be aware that information can be outdated.