Reading CSV with Thai, Japanese, Chinese characters etc is no problem. Is your document in Unicode format?
If you can attach a Thai CSV file to this post we will test it.
See also
Here is a quick test macro that shows the Unicode support:
{
"Name": "unicode test",
"CreationDate": "2021-2-9",
"Commands": [
{
"Command": "open",
"Target": "https://zh.wikipedia.org/wiki/%E6%A9%9F%E5%99%A8%E4%BA%BA%E6%B5%81%E7%A8%8B%E8%87%AA%E5%8B%95%E5%8C%96",
"Value": ""
},
{
"Command": "storeText",
"Target": "id=firstHeading",
"Value": "!csvline"
},
{
"Command": "storeText",
"Target": "id=siteSub",
"Value": "!csvline"
},
{
"Command": "storeText",
"Target": "id=來源",
"Value": "!csvline"
},
{
"Command": "csvSave",
"Target": "test1",
"Value": ""
}
]
}