[Solved] JScript AddColumn does not work, what am I doing wrong?

I've read this topic, which is exactly dealing with JSON problem and it seems it was solved when JScript was updated to 5.8

I added the versio check for javascript and it is 5.8:

DOpus.Output("jscript version: " + ScriptEngineMajorVersion() + "." + ScriptEngineMinorVersion());

result:

jscript version: 5.8

Then how come this line:

myCustomData = JSON.parse(fileData);

still gives me this error:

Error at line 67, position 5
Syntax error (0x800a03ea)

I tried googling the error code, it may have something to do with windows 8.1 and IE 11, but it's over my head... :confused:

Any help would be appreciated...