ACD - Transfer to Collective Speed Dial

[Brekom]

Hello everyone,
I would like to use TRANSFER option under ACD Group management. It means, after 2 min. the call will be transfered to specified external destination. It works, but the number displayed at the destination is the ACD virtuel number and not the CALLER A number. Is it possible to manage it? I have found that in MLAA it is possible to manage it with the parameter:
"From OXO Connect R5.0, a new global parameter “AA_Ext_Caller” is introduced to send the Caller number to
the SIP destination routed from AA/MLAA. The parameter is introduced in “OMC ->System Miscellaneous ->
Global System Parameters”. Possible values are “false” to disable the feature and “true” to enable the feature.
By default, the parameter “AA_Ext_Caller” is set as “false”"
But it doesn't work for ACD. Many thanks in advance.
Jan