Sample code to reproduce the problem using Sybase ASE 15.

// create connection
var conn = aqua.project.getServerConnection('Sybase ASE 15.7');
conn.connect();
conn.changeDatabase('master');

// define variables
var query = null;
var dataSet = null;

// --------- query 1 ---------
// create data set
query = 'select *\nfrom master..spt_values';

var scriptResult     = conn.executeScript(query);
var statementResults = scriptResult.getResults()[0];
dataSet = statementResults.resultData[0];
print(dataSet.getRowCount());