Onchange event in form doesn't update all the fields

Hello everybody,

I have an issue with **v9.11.016 (9), Mariadb 10.5.23 on debian , Php 7.4.33

in a form app where in Ajax_event_OnChange for field GRPTARIF_1 it doesn’t change fields GRPTARIF_2 to GRPTARIF_10 on the screen but it works in v8.1

Here is the code in onchange Event

{GRPTARIF_2} = {GRPTARIF_1};
{GRPTARIF_3} ={GRPTARIF_1};
{GRPTARIF_4} ={GRPTARIF_1};
{GRPTARIF_5} ={GRPTARIF_1};
{GRPTARIF_6} ={GRPTARIF_1};
{GRPTARIF_7} ={GRPTARIF_1};
{GRPTARIF_8} ={GRPTARIF_1};
{GRPTARIF_9} ={GRPTARIF_1};
{GRPTARIF_10} ={GRPTARIF_1};

Thank you for your helps
Can

I think SC 9.11 is not compatible with php 7.4.
SC 9.11 version is comptaible with php 8.1

Thank you for your reply.
I have more than 600 app in my project and it’s the only think that doesn’t work .