Lucee cfexecute non blocking mode

I have a long running process that I just need to run the shell script

<cfset luceeUpdate = "/usr/share/lucee_update">
<cfset args = [ "-D", ""] />
<cfexecute name="#luceeUpdate#" variable="result" arguments="#args#"  errorvariable="errorV" timeout="0" ></cfexecute>

I tried using timeout=0 so that the cfexecute will run in a non blocking mode but cfexecute still runs in a blocking mode

OS: Ubuntu VERSION=“18.04.4 LTS (Bionic Beaver)” Linux (4.15.0) 64bit
Java Version: 11.0.6 (AdoptOpenJDK) 64bit
Tomcat Version: Apache Tomcat/9.0.34
Lucee Version: Lucee