Add JavaScript inside Vscript

[Clutch Cargo 0]

I am trying to add some JS code inside my vbscript.  I know literally nothing regarding JS so what I have researched I have come up with this but I get a "syntax error" at  the 'Sub Trace()' line.

Can anyone show me the proper way?

Set App = CreateObject("Illustrator.Application")
Set FSO = CreateObject("Scripting.FileSystemObject")
Set SourceFolder = FSO.GetFolder("S:\SOCAL\Section_31\buildCOM TIFFs")
Set TIFFfile = SourceFolder.Files

Dim FileRef
For Each FileRef In SourceFolder.Files
    Set AutoCADOpenOptions = App.Preferences.AutoCADFileOptions
        AutoCADOpenOptions.MergeLayers = false
        CurrentInteractionLevel = App.UserInteractionLevel
        App.UserInteractionLevel = -1 ' aiDontDisplayAlerts
        Set myDoc = App.Open(FileRef.Path,2)
        App.UserInteractionLevel = CurrentInteractionLevel
    
    Call Trace()
    
    Sub Trace()
    <Script Language="JavaScript">
    function traceRaster(){
        var docRef = App.ActiveDocument;  
        for(var a=0;a<docRef.placedItems.length;a++){  
            //this script implies the images are LINKED, not embedded. if you are working with embedded images, change 'placedItems' to 'rasterItems'
        var item = docRef.placedItems[a];
        var traced = item.trace();  
            traced.tracing.tracingOptions.loadFromPreset("Land Cover");  
            //Change 'Line Art' or your preferred tracing preset if necessary
        }
        docRef.close(SaveOptions.SAVECHANGES);  
        }
    </Script>
    End Sub
Next

[justsomeguy 1,135]

Those are 2 different languages, you can't mix them.  They cannot share variables or anything like that.  You're better off choosing a language and converting whatever code you need to convert to that language.