Apple Script - Syntax Error

Nobody can answer this without your target application.

AppleScript is a kind of conversation with other application (target).

So, you have to tell with some application (Keynote? Microsoft PowerPoint? Adobe InDesign?).

And...the target application must placed at your machine. We can not compile (check syntax and translate into AppleEvents code) AppleScript without target application binary.

Understood. As I said I'm new to this and wasn't sure how much of the code you'd need and how much would just be distracting.

The whole code block is;

set illustratorLabel to "Adobe Illustrator"
set powerpointLabel to "Microsoft PowerPoint"
set buttonLabel to "Paste on Active Slide"
 
 
display dialog "Please ensure the object you want to copy is selected in Adobe Illustrator before continuing." with title dialogTitle buttons {"OK"} default button "OK"
 
 
set aiApp to application illustratorLabel
set pptApp to application powerpointLabel
 
 
set svgClipboard to ""
tell aiApp
    activate
    tell front document
        set selectionCount to count selection
        if selectionCount is 0 then
            display alert "Please select an object in Adobe Illustrator before continuing." as critical
            return
        end if
 
        set selectedPathItem to first item of selection
        set name of selectedPathItem to "Selected Object" -- set a name for the object to be used in the SVG
 
        set myDoc to it
 
        set svgFile to export myDoc to file ((path to desktop as string) & "clipboard.svg") as SVG with options {sVGAutoKerning:false, sVGIncludeFileInfo:false, sVGIncludeUnusedStyles:true, sVGObjectIDPrefix:""}
 
        set svgClipboard to read svgFile
        close svgFile without saving
        delete file "clipboard.svg"
    end tell
end tell
 
 
tell pptApp
    activate
    set activePresentation to active presentation
    if activePresentation is missing value then
        display alert "Please open a presentation in PowerPoint before continuing." as critical
        return
    end if
 
 
    set activeSlide to slide selection of slide view of active window of activePresentation
    tell activeSlide
        make new picture at end with properties {file name:svgClipboard}
    end tell
 
 
    display dialog "The selected object has been pasted onto the active slide in PowerPoint." with title dialogTitle buttons {"OK"} default button "OK"
end tell

Any guidance, or pointing me in the direction of the right resources to solve this is greatly appreciated.