ssWriteRTWParamSettings not operating as expected

With the following code:

char_T textArray[3][6] = {"ABC","XYZ","456"};

if ( !ssWriteRTWParamSettings(S, 2,
         SSWRITE_VALUE_QSTR,       "TestExample",    "EasyStringToFind",
     SSWRITE_VALUE_VECT_STR,   "Values",         textArray, 3
    ) ) 
{        
    return; //(error reporting will be handled by SL)
}

then I get this in the rtw file:

      SFcnParamSettings {
  TestExample    "EasyStringToFind"
  Values      ABC
      }

However I expect and want to get:

      SFcnParamSettings {
  TestExample    "EasyStringToFind"
  Values      ["ABC" "XYZ" "456"]
      }

So is this an incorrect use, a misunderstanding on my part or a bug?