ModelSim AE vs SE and "transcript file xxx"

[Altera_Forum]

I have some difficulties with ModelSim AE. My goal is to open a read/write channel between ModelSim and an external program. This works fine with ModelSim SE and it's done as follow: 

 in "my_macro.do" : fconfigure $MyChannel -blocking 0 -buffering line fileevent $MyChannel readable "readMe $MyChannel" transcript file $MyChannel  OK. From this point,   

• With both ModelSim, if I type "puts $MyChannel string", the string is correctly sent to $MyChannel. 

 BUT, the transcript text there is a problem :  

• with ModelSim SE : the transcript is correctly redirected to $MyChannel. 
• with ModelSim AE, a file called $MyChannel is created. The value of this variable is always filexxxxxxx (file with 7 hexadecimal digit). 

 My external program needs to receive the transcript to correctly functionnate. The PDF Reference Manual for "transcript file" for both ModelSim AE/SE is exactly the same.  Does someone know how to output the transcript file to a channel under ModelSim AE ?  Thanks in advance.  Regards.