Hello Zathan, first of all thanks for your help... im trying to add that event on the System menu but i can not see that option.
Is there any step I should do before to get working with the solution you propose?
Compare two values
"First value" box: 'yourcharacter.Platform.VectorX'
"Comparison" box: 'Less than' and then 'Greater than'
"Second value" box: 0
Before this, delete the old "character turning" action.
Any difficulties, send me your .capx. I'll fix to you.