Check if a user has amount of resources in their inventory?

Is it possible?

 

player.inventory.getAmount(itemID);
this returns the amount

 

At the moment

player.inventory.containerMain.GetAmount(94756378, true)

Will only get from the main container but i want to see how much cloth is in their main container + belt.

is it possible?
[DOUBLEPOST=1479401287][/DOUBLEPOST]Nevermind