grid cell update error

[heavenite]

As attached file show, I got the cell value to be [Object object] whenever I update a cell. What may be the problem? I have quite a lot dependency programs regarding this part. I do not know how to track down. Please advice ...

[Isomorphic]

Start with the RPC tab in the Developer Console. This problem suggests you are providing an object (eg {foo:"bar"}) for a field where you should be providing just an atomic value (eg just "bar").