sketch block instance in drawing

Dear all

I am using blocks in drawing

when I drag & drop thses blocks from design library location

each time I get new instances for those blocks for example motor block

first time I drag & dop indrawing, then it shows me motor-1

second time I drag & dop indrawing, then it shows me motor-4

third time I drag & dop indrawing, then it shows me motor-7

Question here is why it is not adding the blocks sequentially in drawing (means - motor-1, motor-2, motor-3 and so on)

-Sanjay Phadke

SolidworksApi macros