In the screenshot you put up, the left column shows WHERE you are in the program. It's the memory addresses that are being displayed.
That's not where you are going to search for the frequency limits. It's in the DATA, all the information in the main window, that you are searching for the strings in question.
So, what does the software say is the lower band limit that you want to change?
If, for example, it is 450.000000 MHz, then you can expect that this frequency will be expressed in hex with no decimal place.
450000000 decimal equates to 1AD27480 hex. (Google "decimal to hex converter" and use any of the converters that come up in links.)
Now you need to know what your new desired value will be. Let's assume it's 440.000000 MHz.
In hex, 440000000 is 1A39DE00.
Use "search and replace all" or whatever it's called. That will replace every instance where the string value that, in this case, equates to the lower band limit, with the new string value that you specify.
Specifically, you would use search and replace, to replace all instances of 1AD27480 with 1A39DE00.
If the original lower limit is 445.000000 MHz then the hex string that represents that is 1A862940 and in that case,
that is the string you will search for and replace.
After all instances have been replaced, you would then save the file and test it.
(Hopefully you are keeping a backup of the unaltered file on hand.)
It has been YEARS, and a lot of them, since I first made that bandsplit hack work with an Astro Saber. I may be totally wrong but I think the band limits appeared in 11 places in the file. I replaced all 11 instances and it was just as if the CPS was originally written for the new bandsplit limits.
If you want to go whole hog you could also replace all instances where the bandsplit limit is defined in text, by doing the same edits in the other files in the software package. Like even in the help files.
Really, it IS that simple. Any noob can "search and replace" once you know the string to replace.
Again, it's been so long that I don't remember the details about the CPS edit.
It MAY even be that the values you see are not the actual frequency values, but are mathematically related to them.
For example, it may be that the values in the CPS represent exactly HALF the operating frequency. So 450.000000 MHz
may actually be expressed as the hex equivalent of 225 MHz instead. Which would be D693A40.
Knowing this, you should not have much of a problem finding the relevant frequency limit strings.
I honestly don't remember if that CPS uses hex to express the frequency limits or if it's kept in decimal. You will have to find out.
The process is the same either way. Just replace the hex represented value with another hex represented value. If it's all done
in decimal, replace decimal values with decimal values.