Update Symbols with changing Environment Variables

[r4bit999]

I almost give up, please help! How i can update Symbols with dynamic user-input and environment variables? I have e.g.

`# global variables
command1 = "ps aux"
command2 = "ls -l /proc/"
command3 = "cat " + consoleimput + "\n\n"

####################################################
CLIENT_HELLO_SYMBOL = Symbol(name="hello")
CLIENT_HELLO_SYMBOL.fields = [
Field(name="Message-Type", domain=HexaString(b"00112233")),
Field(name="SessionID", domain=HexaString(b"00000000")),
]
INPUT_VOCABULARY.append(CLIENT_HELLO_SYMBOL)

####################################################
SERVER_HELLO_SYMBOL = Symbol(name="hello")
SERVER_HELLO_SYMBOL.fields = [
Field(name="Message-Type", domain=HexaString(b"33221100")),
Field(name="SessionID", domain=HexaString(b"4FFFFF3E")),
]
OUTPUT_VOCABULARY.append(SERVER_HELLO_SYMBOL)

####################################################
QUERY_SYMBOL = Symbol(name="hello")
QUERY_SYMBOL.fields = [
Field(name="Message-Type", domain=HexaString(b"22221111")),
Field(Value(SERVER_HELLO_SYMBOL.fields[1]), #so we can access the sessionID
Field(name="command-with-args", ??? command3

]

INPUT_VOCABULARY.append(QUERY_SYMBOL)

####################################################
####################################################

open TCP Client

tcp_client = TCPClient(remoteIP='192.168.1.2', remotePort=9000)
abstractLayer1 = AbstractionLayer(tcp_client, INPUT_VOCABULARY + OUTPUT_VOCABULARY)

abstractLayer1.writeSymbol(CLIENT_HELLO_SYMBOL)
(received_symbol, received_data) = abstractLayer1.readSymbol()
print(received_symbol.name)

#command = USERINPUT IN CONSOLE
command = command2

#Write / Specialize Query Symbol with dynamic user input
abstractLayer1.writeSymbol(QUERY_SYMBOL)
(received_symbol, received_data) = abstractLayer1.readSymbol()
print(received_symbol.name)

`