groovy question

hello,
I have a groovy script that updates the database. The script works fine and updates the database. However, in the 'test log' i see the following entry after the corresponding to the groovy script.

-> Script-result: false

What does this mean ?

The groovy script looks like

import groovy.sql.Sql

//get email address from properties file
def EmailStep = testRunner.testCase.getTestStepByName("Properties");
Email = EmailStep.getPropertyValue("Email");
log.info(Email)

//update database to verify account
driver = Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();
sql = Sql.newInstance("jdbc:sqlserver://:1433;databaseName=databasename;user=;password=;") 
sql.execute(")");


THanks

Ali