Hi,
I am new to OATS.
Trying to run the load test using OATS.

In my script, I have
http.solveGroupJavaScript("window[@index='0']", new String[] {
                              http.javaScriptPath("web.jscript.http1019670200808_8",
                                        1, 9, 3, 0),
                              http.javaScriptPath("web.jscript.http1019670200808_1",
                                        1, 12, 0, 0),
                              http.javaScriptPath("web.jscript.http1019670200808_9",
                                        1, 11, 3, 0) })

In later step, under the post data
The script has:
http.param("event","{{web.jscript.http1019670200808_8,roleform:cmbSiteId}}")

It is actually from recording and I didn't modify the scripts, but I found that this script will failed randomly.

And the error is "Failed to solve JavaScript variable web.jscript.http1019670200808_8_8:1:9:3:0

Does that mean that "window[@index='0']" is not available randomly? How do I fix this problem?
Can someone advise?

Thanks so much for any information in advance.
Shanna