Help with adding xtool to my installer script

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Hi guys
i want to use This methods on my installer:

xtool+lolz+srep+xz

and xtool is a precompressor
then the other methods compress the xtool archive

so there will be a big size consumed on the hard drive so
i want my installer to delete the xtool archive after other methods extracted there files successfully

that's a screen shot of my script below