string with text as an argument

[nmdonsk]

hi, how can I pass a string with text as an argument?
what do I need to change to pass the text argument?

extern void mPrint(String x) {
Serial.println(x);
}
mjs_ffi(vm, "print", (cfn_t) mPrint, "vi"); // Import write()

"vi" - it means integer (int)? how String?