The values of parameter index can be within the range from 0 to %GetStTextRange+1 for status texts and its configuration parameter "Text usage" is set on "Values". Zero value (0) is in accordance with the color at field LOW and the value %GetStTextRange+1 is in accordance with the color at field HIGH. Value of index -1 gets back a predefined color. Different value of index generates an error ERR_RANGE_ERROR. If the proper color component for required index is not defined, the function gets back the invalid value.
The following rule can be applied for really displayed color: If the color is not defined for proper index (>=1), the color with index -1 will be used.
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