What is the problem with this and also Im playing on mobile device (android). I hope someone could help me.
In programming, "Regular Expressions" or RegEx (or apparently Regexp in this case, never heard it like this) is used to find a collection of characters that match a pattern.
Looking at that pattern, the software you're using, JoiPlay, is trying to find a set of characters related to "MAXHP" that get's changed (the [\-\+] minus and plus here determine if it's a negative change or a positive change.).
Since you're crashing on basically gaining control of the character, I'm assuming that's when the MAXHP value gets instantiated from 0 to whatever it is at the start (16?).
Therefore, long-winded way for me to tell you, it's the JoiPlay software that you're using's fault, it is unfixable there since it's an error (or at least unpredicted error logic for this game/instance in particular) in it's code. The only fix is to play it on PC since we know it works here for so many people (or use another 'better' software for Android).