I was looking at the advanced options, and specifying Name, Mana Cost and Type don't seem to do what I expect. Example: Fire Bomb 2R Instant the mana is load

I was looking at the advanced options, and specifying Name, Mana Cost and Type don't seem to do what I expect. Example: Fire Bomb 2R Instant the mana is loaded as 2R instead of 2(Mountain Symbol) and the name/type don't seem to line up with what is generated. Is there something I am missing here or do those inputs just override what is on the card?