Error "Image type is not supported in output fields." for Input field

[marcbuils]

I'm submitting a:

• bug report

Summary:

When using the AxGenerate::forward function with an input parameter of type image, the following error occurs: "Image type is not supported in output fields."

Other information:

Here is a detailed explanation of the problem:

1. I called the AxGenerate::forward function with an image input parameter.
2. The function threw an exception with the error message: "Image type is not supported in output fields."

I will propose a pull request to fix this issue.

[marcbuils]

Thanks for the merge !