Entries in Advanced Grid are not displayed?
Good morning!
I have integrated an advanced grid into my mashup and filled it with data from various things (which are all derivates from one template).
In the composer, I can already see data as on the image below:

But if I click "view mashup", the data disappears and I cannot even see the columnnames:

Any suggestions on how to solve this problem?
Thank you in advance for any help!!
Best regards,
theresa
