You need to override the init method of the data source of your form following this way for example: public void init() { SysDimension SysDimension; ; super(); if( element.args().parm()) { SysQuery::findOrCreateRange(this.query().dataSourceTable(tablenum(Dimensions)), fieldnum(Dimensions, DimensionCode)).value(queryValue(element.args().parm())); } else { SysQuery::findOrCreateRange(this.query().dataSourceTable(tablenum(Dimensions)), fieldnum(Dimensions, DimensionCode)).value(queryValue(SysDimension::Department)); } }