Help need MQL4 code

 
Hi

I am looking for an indicator which draw lines with user input x Interval around current price


For example shown in picture current price is 1.3414 and intervel is 10 pips so upper line should @ 1.3420 & 1.3430, and downline should be @ 1.3410 & 1.3400
and if we input 20 pips the line should be @ 1.3430 & 1.3450, down line @ 1.3400 & 1.3380

simple piece of code that will show the logic how to do that will be good

Thanks
Arshed.