[wooolly]

Instead of

Quote:

if(sscanf(params,"u",target)) return SendClientMessage(playerid,-1,"**Usage: /duel <playerid>");

try

Quote:

target = strval(params);

or something like that. Strval should work fine for getting the id from the string

Add some debugging code like printf(target); etc, to see what the value of the variable is when you are using it in the SendClientMessage. Printing variables always helps to find problems.

I haven't tested so I don't know if that is the problem, but I have never used the "u" character before in sscanf, so I just assume its something to do with that, but maybe not. I cant see any other problems as such.