to replace the text in the file of a notepad

[ilya1111]

You help me with my programm. I can't thank you enough for your help.
I have allowed inaccuracy in a task. digits 9,800 and 9,500 are always different, I don't know with what they will be next time. how to make them a variable?

Code:

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int G1 G2 ={any text}
str filePath="Q:\test\test.txt"
str fileText.getfile(filePath)

str oldText=
;1=
;G1
;2=
;G2

str newText=
;Bom G1 bibom
;Mango G2 tango

int n=fileText.findreplace(oldText newText 2) ;;see also replacerx
out F"Replaced {n} instances"

if(n) fileText.setfile(filePath)

something like that.....