[Jeffry]

At top of your FS/GM:

pawn Код:

new BankRobbedLast;

To your command, as soon as the robbing was successful:

pawn Код:

BankRobbedLast = gettime();

To your command, where they try to rob again:

pawn Код:

if(BankRobbedLast+60000 > gettime()) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: The bank has already been robbed in the last 60 minites. Try again later.");

It is much better to use the gettime() function to block an event for a specific amount of time, instead of using timers.