Hi, Srihari,
first - this is not right group to ask this question as the group is related to Process Discovery which is not related to automation itself but to the topic of selecting right processes for automation.
Second - as SNOW is javascript base Write stage usually does not work and you have to either click do get the drop down to list the option then you can try to spy the option which you need and use Global Mouse Click. Not sure why your clicking on submit button does not work. SNOW has got nice Web services or REST API integration which could help you to avoid all those issues.
Regards,
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Zdeněk Kabátek
Head of Professional Services
NEOOPS
http://www.neoops.com/Europe/Prague
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