This works:
Extract Expr(:height << set name( "new" ), :height );
But this one doesn't *):
Extract Expr(myDataTable:height << set name( "new" ), myDataTable:height );
Fortunately there is this dirty trick of Extract Expr (it automatically resolves every defined variable **) - which allows this workaround:
x = Expr( myDataTable:height);
Extract Expr(myDataTable:height << set name( "new" ), x )
*) why?
maybe related to (**)?
