Hi,

I've created a new custom form control, in which I have cloned the existing form control "Upload file". I basically wanted to add some custom code to create a new control with the same functions but also have the ability to check the selected upload file is not above a file size limit set within an extra property field within the control.

I got the new control to work fine, the problem I’m having is using the new control within the "field editing" sections of the CMS.

If I edit a form and create a new field and select the Attribute Type: File and select the new control I’ve created called "Upload file (with limit)". I can set the field to my new control type, set the limit value in the "Edit control setting" section, save and the field will work correctly within the form on the site. But if I go back to edit the field, the CMS thinks the field is now a Text attribute type that has an attribute size of 500. So I have to go through reselecting File and reselecting my new control name. The field has not actually changed to a Text type, it's just the CMS doesn’t recognise the new control is of a type File and therefore does not select it appropriately to edit.

My new control is an exact match for the default "Upload file" control (just with added backend code) and if I create a field using the original upload control and come back to edit it, it correctly displays as an attribute type of File. So I don't know why the CMS doesn’t do this for my new control?

In the CMSSiteManager/Development/Form controls/New control name/General tab, it's definitely set as "Use control for" File and in "Show control in" the "Default data type" is also set to File. I've even tried clearing the cache and application pool.

Have I done something wrong or is there a bug in this section of the CMS?

Thanks,
Tim