Unable to use ModelForm properly

[milonline-eu]

FormPluginFormMixin is using 'instance' argument.

cmsplugin-form-handler/cmsplugin_form_handler/forms.py

Line 9 in 05951ce

def __init__(self, source_url, instance, **kwargs):

At the same time ModelForm is using 'instance' argument too.

So there is no possibility for the form to be filled in by values from a Model.

Simple change of 'instance' argument to something like 'cms_instance' would clear up this issue.