Convert and slightly modify indicator

Hi, I have this job to do which consist of 3 simple works:

1) Convert the indicator TrendStep.mq4 to mq5. The code is short (body of code is 50 lines).

2)This point is very simple: it's about to replace the iMA function with iCustom function in the CurrencyStrengthMA.mq5 indicator, but making it working right: by now the CurrencyStrengthMA calculates the slope of Moving Average in percentage (difference between 2 points of MA) of each symbol; the slopes results in the bars of the histogram. I need to make the CurrencyStrengthMA calculate in the same way the slope in percentage of the TrendStep, so it should be calculated the difference between the current and a previous starting point of the TrendStep, let's say consider the TrendStep if it was the MA, you have just to replace it to the MA using iCustom function, but in the proper way in order to indicate in the right way the bars of the histogram (if the slope is up, green bars; if slope is down, red bars; if the slope is flat, nothing).  Note: I already tried to do the replacement with iCustom, but it doesn't show proper results, so I guess there's something that should be adjusted in addition to the mere replacement.

3) The same replacement of point 2 should be done with the MT4 version of the indicator CurrencyStrengthMA.mq4 using the TrendStep.mq4

I will send indicators after job acceptance.

I request the final mq4 and mq5 source code files.

Thank you

Regards.