[AfiqIqbal]

You were doing it wrong ..

PHP код:

if(sscanf(params, "uu", bombid,type)) return SendClientMessage(playerid, COLOR_RED, "USAGE: /explode [name/id] [type]"); //This is wrong, "u" is for username/playerid 


Replace it with this ...

PHP код:

if(sscanf(params, "ud", bombid,type)) return SendClientMessage(playerid, COLOR_RED, "USAGE: /explode [name/id] [type]");  //Do it like this, "d" is for integer 


Try it .. it should work now.