Modification and correction of an image collection SCRIPT

I have a script which takes 'before' and 'after' photos of charts.

It does this by recreating a chart, moving to a particular time, then saving an image.

Then recreating more of the chart, and saving another image. So a before and after picture, Image A, and Image B (which is A + future action).

The start date, interval and 'rolling window' (i.e. how much time to skip) can be altered.

All of this functions with the following limitations which I would like to be fixed:

(1) Sometimes (around once every 3-4 loops) it produces a 'black' chart for some images.

(2) Because of some irritating scaling / anchoring feature of MT5, it does not 'anchor' the most recent candle on the 'before' chart to the centre of the chart image. What this means is that if the 'after' image is going to end up much higher up, it tends to anchor either the first or last candle in the 'before' image very low down.

This defeats the object of the taking of the images, as I want to practice 'what happens next' scenarios without any clues.

ONLY bid on this job if (A) it makes total sense to you what I wrote above; (B) you know there actually is a solution to the issue.

Unfortunately, I will AUTOMATICALLY REJECT bids which are (i) 'a business card for services' or (ii) zero communication bids.

To summarise, I need a fix for the issue of failing to re-create the charts / move back to the correct point in history sometimes.

And I'd like for the 'A' image and the 'B' image to anchor the ENDTIME of A to the centre of each chart image.

Here is an example from the script output:

IMAGE A:

IMAGE B:

This is fine, but as you can see, the last candle in image A is anchored somewhere near the top (probably because the beginning is anchored at the centre), that means it is obvious from A that B will be downward. I want to anchor to the centre based on the LAST candle in image A (known as endtime1 in the script).

I'd also like some way of scaling the outputs so that in most cases, the chart is scaled to fit on the screen.