getlength print to com monitor

[william]

I cannot get "getlength" to prin to the Command/Alert window

 

I tried using

device.XBEE.purge()
private string datain
private data
private length
private thetime
while (1)
   try
      datain = device.XBEE.readUntil(asc('x'))         //read serial sentence
        ? datain                                       //display datain sentence in command/alert window
      thetime = systime()
      if (left(datain,5) == "$PUMP")                   //valid data stream
            length = getlength(datain)
            ? length        
         data = parse(datain,1,",")
            ? data
            data.time = systime()
            PU_bar_p.addValue(data)

 

But the "? length" does not display anything in the Command/Alert window.

Attached is complete sequence.

Help appreciated.

Thanks

Bill

 

PUMP.txt

[AzeoTech]

Are you sure the if() is evaluating to true?  

I like to add stuff to my ? lines when I think it might have an empty value.  So instead of doing:

? length

I might do:

? "Length: " + length 

That way I know it must print something or its not going through my if().  If length is empty, it will generate an error, not just print a blank line.