[rules-users] [Optaplanner] Help on drl

Hi, I am new to Drools and Optaplanner and have built a first model and succeeded running with java score calculation. Now am struggling trying to use rules for score. Have read "Drools Expert User Guide" and looked through Optaplanner examples but am still confused. Main difficult is discovering what can do and can´t do with java dialect within the "when" and "then" blocks. Are there tutorial and/or other references I could look into for more information on this ? regards Tales