Hello!
Thank you for your help.
I used the lr_save_param_regexp, but with the aResponseBodyStr (activationDone appeared in the body). Then I used the web_sync-function to wait for the correct poll response. Also I put the RegExp expressions in bracket as follows:
lr_save_param_regexp(
aResponseBodyStr,
aResponseBodyLen,
"RegExp=(activationDone)",
"ResultParam=redirectURL",
LAST);
Now the script works much better :)
Best Regards
Robert