jQuery Grid Plugin - jqGrid

Most of my fields are editable, with textareas. They're all working fine, but if i add a new row with (for example) addRowData(15, {name:"default", notes:"blah blah"}), since 'name' and 'notes' are editable columns, i'd expect to get textareas with the relevant text in it - as if the row was created with {name:"default", notes:"blah blah"} being sent through by the server.

However, i don't get a text area, i literally just get the contents of the string in the td.  In other words, the editable options of the relevant columns don't seem to be taken into account.

Am i doing something wrong?

thanks

max