As per Arun explanation, you should use the property which has the value in the clipboard as in your case TestOpen doesn't hold any value in the clipboard as it is just declared page in the Activity Pages&Classes tab. If your property exists in the current work object then you can use pyWorkPage.PropertyName or Primary.PropertyName(if your activity is in work object class.
Thanks for your reply. I did not mean to be confusing. I was attempting to use Obj-Open first because I wanted to make sure I understand and make sure I was communicating and getting values from external Database. I did not want to Obj-Save yet because I was afraid to make a mistake and save something in the wrong place. So now I am attempting to use pyWorkPage values for PublicationIssue.
If I add pyWorkPage to pages and classes tab.
pyWorkPage is the 'Page Name' so what would I put for the 'Class'
Hi, In place of activity, you can use data transform for setting the required values and for saving and committing the changes you can call activity from DT, you can use - using OOTB function @Utilities.pxExecuteAnActivity(Primary,activityname).