Custom Fields - Getting Values

Example 1A - By name

string color = Color;

Example 1B - By name with spaces

string color = #{Product Color};

Example 2 - By id

string color = customfield_12345;

Example 3 - By alias

NOTE: This script assumes that it is running in the context of an issue. Like in a workflow script or listener for example. If you would like to test this script from the SIL Manager, add an issue key to test with under the Run Configuration setting (Run > Run Configuration > Context).