BlipFillType
type BlipFillType = tile | stretchDescription
The type of a fill which uses an image as a background. "tile" - if the image is smaller than the shape which is filled, the image will be tiled all over the created shape surface. "stretch" - if the image is smaller than the shape which is filled, the image will be stretched to fit the created shape surface.
Try It
var oFill = Api.CreateBlipFill("https://example.com/myimage.png", "tile");