Split function in jmeter

Where i have to pass the split function in JMeter? I want to split the string such as V_12 I want the V for the if controller so how can I do this I tried to like this but it is not splitting the strin开发者_高级运维g

${__split(v_12,test_2,_)}

See :

• http://jmeter.apache.org/usermanual/functions.html

You would use ${__split(v_12, varName, _)}

Then access $varName_1 which would contain v

Make sure you're following proper syntax for variable names, etc. See the documentation of the split function.

Also, you'd want to place it before the If controller as part of a beanshell script, OR as the logic for the IF controller.