Help needed with modifying an ea

hi fellow traders and programmers

i came accross an ea (see attachment) its an hi-low ea

now i got this idea for a little modyfication (as i dont know how to program it)

1* cancel opposite order if one is triggered

2* close order x seconds before bar ending so its start all over again next bar

if maybe some one has also a great idea for a modification like only trade long if an ma is pointing up a x degree

and like people to help test it

thats it

leon11