How to transfer Groovy variable to another Groovy Step ?

Hi,

I have a Groovy testStep named Groovy_AC and have a variable named filename . Using Groovy_AC, filename will get a value each time it is run. I need to access this filename variable in another Groovy test step named Groovy_AH. Can I use property transfer step for this ? if so how ? There are many variables in Groovy_AC test step and how can I transfer filename alone ?

Apart from above, I need to transfer filename from Groovy_AC teststep to a JDBC step also, how can I acheive this ?