changing an indicator

hi there

I have an indicator which has some problems like delay, unnecessary multiplying &... how can i modify it? I tried but it doesn't get opened with metaeditor:(.

You need the source code file of the indicator (indicatorname.mq4) to modify it.

Daniel Stein:

You need the source code file of the indicator (indicatorname.mq4) to modify it.

I have the file, it's mq5 and for MT5. By the way, I don't know why but I cannot open the file by metaeditor.
Then it is protected. You can not modify it.