Pear Cost for Applying Runes

Hi,

When I want to upgrade a rune it lists the cost in pearls I need to forge it. When I want to apply a rune to a unit, say a knight, it doesn’t list how many pearls it cost to apply the rune. I tried applying a level 1 rune to a knight to make the knight’s health higher by 2 percent and I received a statement that I didn’t have enough runes to complete the procedure. I looked on the forum and all of the posts are listings about how many pearls it cost to upgrade runes not apply them to units, obstacles, spells …etc. Would you consider updating the code to allow for a visible quantification of how many runes it may cost to apply a rune? Maybe it a bug? I don’t know.