Update the blocked message without re-blocking?

[levinium]

Is there a way to update the message in the $.blockUI without calling another $.blockUI? The behavior of calling another blockUI to update the block message momentarily removes the existing block to put the new block up. This is not ideal as we want to keep the screen locked during a process and only want to update the message, but currently the screen unlocks for a split second to change the block message when calling blockUI again to update the block message.