[Ethnhante]

Hi everyone,
I'm doing a project using ansys ACT acoustics extension. Actually i downloaded an extension (acoustics.webex) but it doesn't work well with me. Some options are hidden and i can't retrieve them or skip them.
Specifically, I'm talking about the possibility to model a perforated tube option which unfortunatelly doesn't appear for me while it should. http://oi68.tinypic.com/2mq9bi0.jpg
That is a screenshot of my ansys mechanical
while this



is what it should be.
you will see that there are some option that aren't in my screen.

any Help.

if you have another extension please message me at mahmoud_bishr@icloud.com