Custom cell editor in Ng Grid

[pitc]

I have been experimenting with the grid and in particular a column where the edit type is Form and have set up the form as one field : a textarea.
I can get the form to popup over the grid column but the content is not as I want it to be.
What I want is the current value of the column data provider in the form and after edits to put the value back into the data provider.
Currently I thought it was sufficient to copy the current value to the edit form variable.
However this is not working - no data at all.
In the documentation there is mention of a custom cell editor and I tried to follow the wiki documentation but it is unclear to me.
I do get the onColumnFormEditStarted method with all the information but I am not sure how to get the column value to the edit form.
Also I do not understand where the setFormEditorValue method has to be used to save the edited value back.
Is there better explanation anywhere ?
Tom

[pitc]

Has anyone got an example code snippet to share for custom cell editor?