Irame with dynamic src using variables

Tried it and didn't work out. But in further testing I found a solution that is posted below. In the Lectora title I created three custom variables:CourseIDStudentIDSurveyURLThen created six actions to build the URL string:First VarName:UpdateCourseIDOn:ShowAction:Modify VariableTarget:CourseIDValue:VAR(AICC_Course_ID)Mod Type:Set Variable ContentsSecond VarName:UpdateStudentIDOn:ShowAction:Modify VariableTarget:StudentIDValue:VAR(AICC_StudentCourse_ID)Mod Type:Set Variable ContentsThird VarName:UpdateSurveyURLOn:ShowAction:Modify VariableTarget:SurveyURLValue:http://www.url.com/?CourseID=Mod Type:Set Variable ContentsForth VarName:AddCourseIDValuetoSurveyURLOn:ShowAction:Modify VariableTarget:SurveyURLValue:VAR(CourseID)Mod Type:Add to VariableFifth VarName:AddStudentIDQueryStringtoSurveyURLOn:ShowAction:Modify VariableTarget:SurveyURLValue:undefined}Second External HTML Object:Object Name:loadevalObject Type:OtherCustom HTML: