Hello, Doug, We have introduced objTypes field for custom forms, that
you can use to assign multiple object types to the form. Also we there
is a new field for Parameter object called 'fieldDefinition' that you
can use to create an image by providing 'fieldType' and 'url'
attributes, for example: "fieldDefinition":
{"fieldType":"image","url":"https://cc-prod.scene7.com/is/image/CCProdAuthor/dt_ps_us_pod2_968x552?$pjpeg$&jpegSize=200&wid=801"
} These updates will be available with API v15.0.