This is example how to fill form configuration
options=value:display , value1:display1
options=value:display , value1:display1|multiple:true
lookup=tb_name:key:field-field2
lookup=tb_name:key:field-field2|multiple:true
options=value:display , value1:display1
type=image|path=/uploads/path/
type=image|path=/uploads/path/|multiple:true
type=file|/uploads/path/
type=file|/uploads/path/|multiple:true