proc EnableHltDebugHlt { {filename ""} } {
    # Creating a HLT debug log file in case debugging is needed

    set ::ixia::logHltapiCommandsFlag 1
    if {$filename == ""} {
	set ::ixia::logHltapiCommandsFileName ixiaHltDebug_[GetTime].txt
    } else {
	set ::ixia::logHltapiCommandsFileName $filename
    }
}