Hi Chitra,
We had similar kind of requirements where we need to capture screenshot and append for the failed Test Cases in html report.
We have customized it through java and xsl library, bundled it as runnable jar, pass the path of it in a batch file, ran it through start process activity of UiPath at the end of test suit execution, which converts xml report to html report along with captured screenshot in corresponding row of failed test case.
is that logic okay to make your req successful.
Regards,
Shyam