Statechart Checks : (C1011) Elements using uninitialized context variables

(C1011) Elements using uninitialized context variables

Elements contain action expressions that use an uninitialized context variable.
Error In:
Correctness
Example:
There is a transition labeled with the following label:

E / Y=$X; $X=Z

$X is used before any value is assigned to it.

 

Erroneous Elements:
States, transitions, and actions