Extensions EF2 multiline 500 characters limit?

[AntonioSousa]

I have an extension where I need multi KB entries in the endpoint configuration. In this case, it's a "text" field with "subType"="multiline" defined in activationSchema.json. It was converted from an EF1 extension.

Seems it is limited to 500 characters (see screenshot below). This issue didn't exist in v1 extensions.

How can this limit be lifted?

[Julius_Loman · Accepted solution]

@AntonioSousa  what constraints do you have in activationSchema.json ? 
This one works for me and I'm able to write a 1kB string. Maybe just 500 chars is default, unless you change it.

[AntonioSousa]

@Julius_Loman,

That did the trick! I hadn't any constraints definition.

Maybe the documentation can be enhanced to state the apparent default limit of 500 bytes...