[AnthonyDaSexy]

mSelection handle dynamic and static menus differently, You are using ShowModelSelectionMenuEx which means you are using a dynamic one, if that is the case you must use this callback:

pawn Код:

public OnPlayerModelSelectionEx(playerid, response, extraid, modelid)

Instead of:

pawn Код:

public OnPlayerModelSelection(playerid, response, listid, modelid)