Array in Parameter

[Corres]

CRXI, SQL Server.
My user wants to choose multiple projects. In the parameter Value Options, I chose Allow Multiple Values.
My Record selection Formula is:

if {?ProjectID}>0 then {EntryLog.ProjectID} = {?ProjectID} else not isnull({EntryLog.ProjectID})

But it gives error:

The array must be subscripted. For example: Array

Can you please help me with the syntax of array for project for this selection formula?
Thanks very much!

 

[lbass]

Change it to:

if {?ProjectID} [red]<>[/red] 0 then
{EntryLog.ProjectID} = {?ProjectID} else
not isnull({EntryLog.ProjectID})

-LB