Custom V.I based server question

Hi,

I need to use the DSC module to create a periodic I/O server. I have designed a working V.I to use as my server V.I. I have read that there are some do's and dont's when creating a server V.I with regards to certain functions. I found this page on the N.I website

 http://zone.ni.com/reference/en-XX/help/371618K-01/lvdscconcepts/dsc_perioioserv/

The following bullet point from the above page has me concerned about my V.I -

"Make sure the VI does not contain any Event Structures or user interface interaction."

I have a "display message to user" function in my V.I which requires an "OK" button to be pressed. Will this be an issue? Is this what could be called a "user interface interaction?.

This message is used in my server V.I to pause the V.I until the "OK" button is pressed.

If this is an issue is it possible to create a shared variable for it so I can access it from another V.I in my project library ?

Thanks in advance.