DataSource/ListGrid integer to boolean conversion

[shortpasta]

Using SmartGWT 3.1p-2012-11-23.

I have this:

final DataSourceField dataSourceField = new DataSourceField (
    "enabledFlag",
    FieldType.BOOLEAN);

... and ...

final ListGridField listGridField = new ListGridField (
    "enabledFlag",
    "Enabled");
listGridField.setType (ListGridFieldType.BOOLEAN);

If the field coming back from the server is a boolean, things work as expected.

However, when the field coming back from the server is an integer with a value of 1, the value presented on the screen is "false".

Is there something special I should do to tell DataSource/ListGrid/family to handle an integer 1 as boolean "true"?