[Babul]

i suggest you work on your indentations:

Код:

	if(dialogid == 2)
	{
		if(response)
		{
			switch(listitem)
			{
				case 0:
				{
					//Selected Item: "Las Venturas"
					SetPlayerCheckpoint(playerid,1981.7261,-2451.8857,13.5469)
				}
				case 1:
				{
					//Selected Item: "Los Santos"
					SetPlayerCheckpoint(playerid,1981.7261,-2451.8857,13.5469);
				}
				case 2:
				{
					//Selected Item: "San Fierro"
					SetPlayerCheckpoint(playerid,-1263.8750,25.1669,14.1484);
				}
			}//you missed closing the switch()
			return 1
		}
	}

a switch(){ is worth 1 more TAB
oh, and as Stigg pointed to: have a look at https://sampwiki.blast.hk/wiki/SetPlayerCheckpoint
you also missed 1 parameter: most prolly the radius?