.........
export function setRowEditable(row) {
    return {
        type: SET_ROW_EDITABLE,
        rowEditable: row
    }
}
export function changeRowEditable(fieldName, newValue) {
    return (dispatch, getState)=> {
        let rowEditable = getState().myForm.rowEditable
        rowEditable[fieldName] = newValue
        dispatch(setRowEditable(rowEditable))
    }
}

export default function myModal(state = initialState, action) {
    switch (action.type) {
...........
         case SET_ROW_EDITABLE:
            return {...state, rowEditable: action.rowEditable}  
        default:
            return state
    }
}