Sets the field value in the message using the {@link PDMFieldInfo} handle
and should be of type PDMFieldType.DECIMAL.

C# |
public virtual PDMMessage setFieldValue( PDMFieldInfo fieldInfo, PDMDecimal newValue )

- fieldInfo (PDMFieldInfo)
- the PDMFieldInfo handle
- newValue (PDMDecimal)
- the PDMDecimal value

a reference to this {@link PDMMessage} for chaining setFieldValue calls