I am using the code below to show a multiline text box for a description field. The text is not wrapping within the textbox. How can I make the text wrap within the width of the text box?

{
columnKey: "UserDescription",
editorType: "text",
readOnly: false,
required: true,
validation: true,
editorOptions: {
height: 100,
width: 300,
textMode: "multiline"
}
}],