Command prompt is jsut the most powerful and advanced tool in Platform Builder, but still lacks of something important: Placeholders (I think they are named like that.)
Placeholders are just a way to modify values or detect stuff in commands with other values.
I want to heal my player at the end of the level 1 point per coin, just use a placeholder
health + [money]
coins = 0
[money] is a placeholder that will be replaced with the number of coins you have. If you have 5 coins the command will do this:
health + 5
money = 0
Another example:
health = [max health]
This will set the health to the max health of the player
Another example:
+You don't have enough currency, you only have [money] coins
If you have 5 coins, the message will say:
"You don't have enough currency, you only have 5 coins"
This will give Platform Builder tons of possibilities and will make easier many stuff.