Override number od threads via maven-soapui-plugin

Hi,

I try to override thread count value via maven-soapui-plugin (setting threadcount property for my loadtest) but so far without success.

Below is my plugin configuration:

    <groupId>eviware</groupId>
    <artifactId>maven-soapui-plugin</artifactId>
    <version>4.0.0</version>
    <configuration>
       <projectFile>${soapui.project.file}</projectFile>
       <outputFolder>target/soupui/</outputFolder>
       <skip>${skip.integration.tests}</skip>
       <loadTest>StartPageLoadTest</loadTest>
       <host>localhost:${port}</host>
       <threadcount>3</threadcount>
       <printReport>false</printReport>
       <junitReport>true</junitReport>
    </configuration>
    <executions>
     <execution>
      <id>my-integration-test</id>
      <phaseintegration-test</phase>
      <goals>
       <goal>loadtest</goal>
      </goals>
     </execution>
    </executions>

Is it possible to do it in that way?

Regards,

Mariusz