Adds a fraction
of a second (millisecond) to a given time value.
Adds the specified number of milliseconds (fractions of a second) to a time or datetime value. This function will always return a valid time or datetime if the beginning time or datetime is valid. This function will always "roll" the next higher value as necessary. For example adding 105 milliseconds will advance the seconds as well as adding 5 milliseconds.
Using a negative INT parameter will result in subtracting that many milliseconds.