gb.media: error message "Unsupported data type: gint64"

[Claus Dietrich <claus.dietrich@xxxxxxxxxx>]

When I set the property "ts-offset" of the GStreamer plugin 
"autoaudiosink" I get the error message "Unsupported data type: gint64".

Example:

Sink = New MediaControl(PipeLine, "autoaudiosink")

Sink["ts-offset"] = 100

My questions:

1. Is there a workaround?

2. Do I have to use GStreamer as shell command if 64bit signed integers 
are required?

3. Could gint64-support be added to gb.media?

Best regards

Claus