This should be easy to transfer one value from response to next request. three steps can be done: first step-- response (test request), second step--property transfer,third step-- test request. so in the first step, you would get correct response, in second step, you need to add property transfer test step,in property transfer step, the first needs to add a name whatever you define,and then you can select source and target step. in source field, you should select previous step and response.the target step you should select the third step and request. in source area, adding the xpath expression which specify the value you want to transfer (if your soapui version is pro, you would select right-side icon to generate the xpath expression automatically, if not, you need to manually write it),in target area, the same way to give out xpath expression that you want to receive the value which transferred from the first step. try to do it
Thanks,
Aaron