I made it finally Thanks a lot!

Thanks Mister Thomthom, I tried that and when I opended the file (tt_selection_memory-1.1.0.rbz) with a notepad as a text editor it shows me that somthing like that :
"...‚e[.òÈÄ4úõå‡wK?\¾…Z^MHxDËv·ñ;öOã.h†îm¤Ë*Êс04a8Ûd&U´9ynV+ÒP«0 CLú5:i Ÿ9eÎÁÛôˆÌ¤G¾M˜÷‰..."

???

Hello
Please how can I modify this constant: SELECTION_STACK_SIZE ?
Thanks