Item Shopping Questions

[theDTD]

how to do these things:
1)ItemX can only be sold to HeroX, if buying hero isn't HeroX item cannot be sold
2)Item in shop will only be shown if a specific hero is in game

 

[HydraRancher]

1) When somebody buys the item, if they are not HeroX, remove it and refund.

2) Do not add them to the shop initially. When HeroX enters, add them in.