Hi Fabio,

This bug looks similar to the one you reported in the Message #938430. The workaround is the same as suggested by Garrett in the Message #939876 in the same thread.

AA = "" + m.AA + ABRACADABRA0(@m.AA)

>Previous issue Thread #951952
>
>Bug/Issue : 4 of 27
>
>TITLE: Bug: optimized strings concatenation with a inner updated
>
>VERSION: 09.00.0000.1720 and previous
>
>STEPS TO REPRODUCE:

<snip>