Hello Ravi,
There are two ways to configure with drop down menu.
1) Via Control Parameters (This will defaulted to your value)
- Create Control Parameters
- Provide values to the Control Parameters
- Define your event message parameter with parameter name equal to control parameters
- Define event message parameter with parameter value and make sure you unchecked No Fixed Values
2) Via Search Help
- Define your own search help with the values you want and then assign that search help while defining event message with parameter value
Please let me know if its not work for you.
Thanks,
Kinjal Rathod