Still doesn't matter. If its Ficus benjamina you're OK. The main issue some cham keepers have had with Ficus is that broken stems or leaves ooze a sticky sap that has the potential to irritate a cham's eyes. Of course the cham would have to rub its eye directly on the sap to have a problem. You can avoid this fairly easily. Before using the tree trim off anything you need (thin out a really dense tree so the cham can climb through it without breaking a lot of twigs, remove dead stems or prune it to fit your cage) and rinse it off well before putting it in your cage.