Board Thread:Support Requests - Getting Technical/@comment-25523075-20160919172516

I looked every where on Wikia how to use "if" in templates but I cannot find anything! Please help, I want to do something like this:

If I type , then the  file will appear. If I type  then a pciture of normal block will appear, see http://blockbros.wikia.com/wiki/File:Gem.png 