[Marricio]

If you mean what I think you mean:

Use GetObjectPos, GetDynamicObjectPos in your case.

pawn Код:

new Float:objectx, Float:objecty, Float:objectz;
GetDynamicObjectPos( /* Objectid goes here, lets say*/ o1[playerid],  objectx, objecty, objectz );

// So you can do this
if(IsPlayerInRangeOfPoint(playerid, 8.0, objectx, objecty, objectz))