[RMVX ACE] HELP WITH HP RECOVERY ITEMS??????

Ok, weird issue. I made a potion that is to restore 30% of the characters HP. I put restore 30% HP in the effects box (above where you post notes.) Well, it works but if I use it in battle it wont show the green numbers of the amount healed like my skills do.

So I try using the formula box, and that will show the green numbers in battle but I cant figure out how to heal by % with the formula box, it's driving me crazy. Please tell me this is an easy fix and Im just missing something obvious.

Oh thanks I'm still getting used to the whole formula thing. So many years of using 2k3.