In Call Transfer scenario,How To Send Blind SoftKey in VVX as a PUSH request

Hi,

When Trying to perform Blind Transfer in VVX 500(Version 5.5.1) Phone using PUSH request, The steps are  After Call Connected 1) Transfer Key PUSH(Success) 2)Select Blind transfer(Failed) . Since Blind Softkey is in top Right Corner of the Screen. I tried using  key:SoftKey3 , key:SoftKey4 or key:SoftKey5 . But none of it hit the Blind key On the top right Corner.

Kindly help me with this.

Thanks and Regards,

Pradeep