// Get the AdParamService.
AdParamServiceInterface adParamService =
adWordsServices.get(session, AdParamServiceInterface.class);
// Create ad params.
AdParam adParam1 = new AdParam();
adParam1.setAdGroupId(adGroupId);
adParam1.setCriterionId(keywordId);
adParam1.setInsertionText("100");
adParam1.setParamIndex(1);
AdParam adParam2 = new AdParam();
adParam2.setAdGroupId(adGroupId);
adParam2.setCriterionId(keywordId);
adParam2.setInsertionText("$40");
adParam2.setParamIndex(2);
// Create operations.
AdParamOperation adParamOperation1 = new AdParamOperation();
adParamOperation1.setOperand(adParam1);
adParamOperation1.setOperator(Operator.SET);