[Pharo-project] pharo-contribution triggering for new Pharo versions

Hi, how to setup the jobs on pharo-contribution to be executed with every new Pharo version? I tried simply to setup URL trigger on http://pharo.gforge.inria.fr/ci/image/20/ but it was not started for new versions. BTW, the job PharoKernel2.0-ReloadByMonticello that loads everyting back to shrinked kernel is green again. -- Pavel