void main()
{
//:: Get the placeable object that triggers the script.
    object oPlaceable = OBJECT_SELF;
	
	string sTexture;

//:: Check if a custom local variable has been set to indicate that the script has run.
    int bHasRun = GetLocalInt(oPlaceable, "HasRun");

    if (!bHasRun)
    {
		switch (d4(1))
		{
			case 1:
			{ 
				sTexture = "tdm01_rock01";
				break;
			}
			
			case 2:
			{ 
				sTexture = "tdm01_rock02"; 
				break;
			}
			
			case 3:
			{ 
				sTexture = "tdm01_rock03";
				break;
			}	

			case 4:
			{ 
				sTexture = "tdm01_rock04";
				break;
			}				
		
		}		
			
		ReplaceObjectTexture(oPlaceable, "tx_rough_006g", sTexture);

	//:: Set the local variable to indicate that the script has run.
        SetLocalInt(oPlaceable, "HasRun", 1);
		
	//:: Removed HB script from event to save resources
		SetEventScript(oPlaceable, EVENT_SCRIPT_PLACEABLE_ON_HEARTBEAT, "");
		
    }
}