Edit existing indicator to add a RAY to the line

Hello, I've found an indicator called #MTF Moving Average.mq4. It works perfectly, I just need the line to extend a ray to the right, see linked images for an example.

Please look at this image, it is a chart on the last hour of the day, before the daily bar close. You can see 2 copies of the MTF MA indicator (Yellow MA and Lime MA), and there's a space where the moving averages are waiting for the bar to close to move to the next day:
https://prnt.sc/i7vt21

And here it is after the open:
https://prnt.sc/i7w5sh

If the indicator does what I need, the indicators in the above 2 images would look something like this:

Before the close:
https://prnt.sc/i7w0sn

After the open:
https://prnt.sc/i7w2ip

Hope someone can help, thanks.