soapUI: The usage of dynamic properties

In my test case I wanted to use a Random number for a particular soap request and use that number in subsequent test steps. I used the following Groovy script within my soap request:
<PersNumber>${=(int)(Math.random()*10000)}</PersNumber>

Then I wanted to use this generated number within a JDBC Step to check whether the customer was correctly inserted within a database. So I used a JDBC step with a persnumber property:

Then the next thing I did was to create a Transfer step to transfer the <PersNumber> content within the request to the persnumber property of the JDBC step.
This did not work because in the end the persnumber property contained:
${=(int)(Math.random()*10000)}

The trick here is to use a test Property for this and to use this property within the soap step and within the JDBC SQL Query.

So first define a property:

Use this property within the soap request:
<PersNumber>${Properties#persnumber}</tns1:PersNumber>

And use the following construction within the SQL Query:
select * from nummers_update where
   pers_nummer = ${Properties#persnumber}

Note:
The only disadvantage is that the property is not initialized with a new random value in case you restart the case.