Often, the raw data returned from a data source is not in a suitable or required format for output. Fields and Data Items may have an output format applied to change a number or date/time value into a suitable format, rather than retain the data source's default rendering.
Enter a test value and a format specification, then click “Try It” to see how the output looks in the box below. If the format is how you want it, click “Use This Format” to place the specification in the output format setting.
The format specifications are described with examples below this test form and further information can be found at the following locations