just if it's not hard and possible to do:
how to random spawn 3 items:
[coins,money,gold] in map,
this items spawned maximum 10.
Script check map-if item with id 66(coins) or 67 ot 68 in map is 10 - script will not spawn it anymore. if it 9 or small it will again spawn for being 10, spawntimer 60 sec.
Sorry me bad english i from russian
/i writte it too fast, sorry, if i will onger it will be better.. if it is not understandable i can re-writte it.