selenium - Java Automated Test (Out of Bounds Exception) -

i writing automated tests , of them working until tried enter 14 different examples. after that, gave outofboundsexception , stopped running. think because gave input , example array not have size.

is assumption correct? how can change it?

this .feature code

@smoke  @+all  @myidentifier scenario outline: blabla     when open blabla     when click blabla     should see blabla     when click <buttonname> in  blabla etc etc etc etc 

examples:

    |index||buttonname|      |1| |bla|      |2| |blabla|      |3| |blablabla|      |4| |blablablabla|      |5| |blaa|      |6| |bla|     |7| |input|     |8| |inputbla| #   |9| |inputblabla|