Set preferred Diff command and Merge command with CLI

Hello,

I am using Integrity 10.8.0.8356.

Under File->Preferences->Configuration Management -> Diff and Merge Tools

the user can set the  preferred Diff command and Merge command.

For example in the configuration file below

"C:\Users\MateiA\AppData\Roaming\Integrity\10.8\IntegrityClient.rc"

I see the following values:

vdiffCommand=compare.exe /title1\:"{1}" /title2\:"{2}" "{3}" "{4}"
mergeCommand=compare.exe /wait /title1\:"Merge From\:{1}" /title2\:"Merge Base\:{0}" /title3\:"Merge To\:{2}" /3 "{5}" "{4}" "{6}" "{8}"

I am interested to set these two values via CLI

I don't know how to use setprefs --save --command=??? --ui=gui someKey=someValue

Many thanks !