Hello Jesus,
Sorry for the delayed input, I have been busy at work. However, I found the problem.
For those who are having the similar issue. There are two reasons that caused this.
First I had to make a change in this config file
"C:\Program Files (x86)\SAP\SAP Business One Integration\IntegrationServer\Tomcat\webapps\B1iXcellerator\xcellerator.cfg"
xcl.webdav=Disabled --> xcl.webdav=full
Second thing is I had to replace "dummy" with "webdav" in the URL I am using.
http://127.0.0.1:8080/B1iXcellerator/exec/dummy --> http://127.0.0.1:8080/B1iXcellerator/exec/webdav/
Don't forget to restart Tomcat after you change the config file. I hope this could help someone out.
Regards,
Atilla