AlliedModders - Item custom attributes don't work

I'm trying to get the Rocket Jumper and Sticky Jumper to be infinite ammo and cancel falling damage to all player.

Quote:

"custom_weapons_v3"
}
"*"
{
"265"
{ "preserve-attributes" "1"
"quality" "6"
"level" "99"
"1" "78 ; 9"
"2" "275 ; 1"
}
"237"
{
"preserve-attributes" "1"
"quality" "6"
"level" "99"
"1" "76 ; 9"
"2" "275 ; 1"
}
}
}

but it doesn’t work. I make sure that I compiled tf2items_manager.sp into .smx with spcomp.exe in the scripts folder, put it into plugins folder and loaded it. Also typed "sm exts load tf2items" in cmd.

Please tell me what do I miss or wrong.