%SetInvalid function

Function
The function invalidates (sets the Invalid attribute) the value given by the parameter while the value type remains unchanged.
Declaration


UNIVAL  %SetInvalid(
   UNIVAL in expression
 )
Parameters


expressionOptional expression.
Note
The function may be used e.g. to invalidate any value.
Example


%SetInvalid(0)
Related topics
%IsNull

Implemented functions
Function arguments - types