I cann't receive message from jshell

Hi

I use shl_StdOut to receive data from "sudo nodejs server.js". server.js is a mini webserver. when i running "exceute", it run in background. it has some showing message but shl_StdOut can't receive them. Why ? Where am i missing ?

Code:

  Sub Execute As Boolean  
If Not(ProcessIsRunning("nodejs server.js")) Then
Dim sh As Shell
        sh.Initialize("shl", "sudo", Array As String("nodejs","server.js"))
        sh.WorkingDirectory="/home/pi/OpenPLC_v2"
        sh.Run(-1)...  

I cann't receive message from jshell

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