[VXA] Yanfly Learn Skilll Engine problem

[Gaming Princess Luna]

I'm actually using that script in my RPG for learning skills:
http://yanflychannel.wordpress.com/rmvxa/gameplay-scripts/learn-skill-engine/

My problem is, that the window in the attachment only appears, if you have already the amount of JP, but you never know how much you allready have.
So I'm asking about a fix, that the window allways appears, even you don't have the amount of JP, EXP or GOLD.
I hope you can help me, I tried myself by changing various lines, but never worked, I also tried to ask directly on his site, but I never got an answer back.
Thank you in advance. :3 (\s/)