Add array of points to a series


I work on TChart using Delphi6.

I want to add to a TlineSeries many points.

Using the TlineSeries command AddArray cause to fix distance of one,
between the points.

For example: Series1.AddArray ([7,8,9]) create the points: {0,7}, {1,8},

How it is possible to create for example the points: {0,7}, {2,8}, {4,9} and
still use an array of points instead of adding it one by one (using AddXY).