New to UI Path stuck with an issue

Hi I am trying to read my mail box with acme 1 application, i am able to retrieve the data into a variable. Now i am trying a loop using For each but the variable holding the single message is giving me the following error and i am unable to see the attachments in my folder.

Can someone suggest me please.

The following errors were encountered while processing the workflow tree:
‘VisualBasicValue’: Compiler error(s) encountered processing expression “SingleEmail.AlternateViews”.
‘SingleEmail’ is not declared. It may be inaccessible due to its protection level.
and the ForEach it is not holding the variable at all.