Check if specified Excel workbook is already open, with .vbs

Question

Continuing from the title... If it is already open, make it the active window before continuing with script. And if it's not already open, simply open it and continue with script. I have become very confused trying to get this procedure
to happen, this mish-mash is what I have so far:
path=createobject("scripting.filesystemobject").getparentfoldername(wscript.scriptfullname)
excelpath=path&"\example.xlsx"
set objword = createobject("word.application")
set coltasks = objword.tasks
i = 0
for each objtask in coltasks
    name = lcase(objtask.name)
    If instr(name, "example.xlsx") then
        i=1
    end if
next
 if i=1 then
     wscript.echo "An active instance of example.xlsx has been found"
     objexcel.visible=true
 call CODE
 else
     set objexcel=createobject("excel.application")
     objexcel.workbooks.open(excelpath)
     set objsheet=objexcel.activeworkbook.worksheets(1)
     objexcel.visible=true 
     call CODE
 end if
sub CODE
    objword.quit
    wscript.echo "Place rest of code here"
end sub
A running instance of the "example.xlsx" is never detected and made the active window, so the first if block never executes. It always opens a new instance of "example.xlsx". What am I doing wrong? ...I'm a novice at this
so an explanation is appreciated, and if there's an easier way, that too is appreciated.

Answer 1

Spot on, changed the first if condition it to:
if i=1 then
 wscript.echo "An active instance of example.xlsx has been found"
 set objexcel=getobject(excelpath)
 call CODE
...and hey presto, thanks jrv! :D ...By the way, barring the poor indentation and lowercase syntax, is this code a passable attempt at achieving this, or is there a simpler way? And if there's another file named "example" which is not
an excel file, in the task manager running applications list, will it affect the outcome? - Should I add "microsoft excel" to the instr search?