Hello,

I'm having trouble setting up a Sub Form!

I took the same steps as the video below and I did not succeed.
Https://www.youtube.com/watch?v=OUpQu1Rc5AU&index=8&list=PLnr0T4N8qJf6q2DvuzWlPEZeGTq32Eugv

Follows details of the created module.

M x N relationship between the Exercise and Muscular Groups tables

Exercise Table
Table Name: Exercises
Fields:
Id (PK)
Team_id (FK team module)
name
description
difficulty
image

Exercise Groups
Name of the table: exercise_grupomuscular
Fields:
Id (PK)
exercise_id (FK exercise module)
grupomuscular_id (FK muscle groups module)
order

Muscular Groups Table
Table name: muscular_groups
Fields:
Id (PK)
name
description
order

Steps taken:
1. Create CRUD Exercises
2. Create CRUD Exercises Muscular Groups
3. Edit the Exercise GRUD
3.1. Add sub form with the configuration below
Title: Muscular Groups
Master Form Key: id (PK of the exercise table)
Take FORM from Module: CRUD Exercises Muscular Groups
Sub Form Database: exercise_group
Sub Form Relation Key: exercicio_id (FK exercicio in the muscular-exercise table)
3.2. Add Master Detail
Title: Muscular Groups
Master Key: id
Module target: CRUD Exercises Muscular Groups
DB Table Module Target: exercise_grupomuscular
Detail Key: exerccicio_id
3.3. Rebuild

When I access the exercise registration form, the Muscle Groups Exercises form fields are displayed, I fill in the data and when saved displays the error below:

https://drive.google.com/drive/folders/0B6F-PQeuceAXbXJ2U2xZeFFfcEU?usp=sharing

Could you help me identify and solve this problem?

Grateful.