[Hanuman]

pawn Код:

if(GetPlayerTeam(playerid) == 1) //red
    {
        if(IsPlayerInRangeOfPoint(playerid, -507.8125, 2107.421875, -267.578125, 2316.40625))
        {
            ShowPlayerDialog(playerid, SHOP_DIALOG, DIALOG_STYLE_LIST, "Weapon Shop", "Deagle: $500\nSawn-Off: $1000\nM4: $2000\nSniper: $3000", "Select", "Exit");//Show them the dialog.
            return true;
        }
    }
    else if(GetPlayerTeam(playerid) == 2) // blue
    {
        if(IsPlayerInRangeOfPoint(playerid, 3.90625, 1656.25,382.8125, 2121.0975))
        {
            ShowPlayerDialog(playerid, SHOP_DIALOG, DIALOG_STYLE_LIST, "Weapon Shop", "Deagle: $500\nSawn-Off: $1000\nM4: $2000\nSniper: $3000", "Select", "Exit");//Show them the dialog.
            return true;
        }
    }

Or u need to do it like this!

Note: range can't have negative value(-507.8125).