Running Multiple instances of a project workflows from Start Workflow Wizard

Hi team,
I need to run multiple instances of AEM project workflow from start workflow wizard. The problem is that when I select multiple paths (using pathfield) on step one and say submit, the workflow picks only the 1st item in the payload.

What I have been able to do is:

1. Change resource type of "/projects/wizards/content-approval-start/jcr:content/items/column2/items/contentpath" to "granite/ui/components/coral/foundation/form/pathfield", so that I can select multiple resources.
2. My workflow already support multiple payloads with individual instances as "Multi-resource-support" is unchecked in the model properties.

Waiting for your kind advice around this requirement.

Thanks.