Writing problem after placing a group of variables in a specific section with IAR arm linker

Question

*Hello everybody , I would like to ask you because I need something. I used the cisdous lines to place a group of variables in a specific area

/* Place following data in section MY_DATA */
#pragma default_variable_attributes = @ "MY_DATA"

int data1;

/* Stop placing data in section MY_DATA */
#pragma default_variable_attributes =
int data2;

I checked everything is going well. The variables are well placed in the specific area. However, when I modify the variables (data1=80), nothing happens. The variable always remains at 0

Could anyone help me? THANK YOU D4AVANCE