wrong no. is coming while citing from endnote x5 to word file how to correct it

Hi,

I was trying to cite on word file, which was already having some citations. when i cited, the no. coming at cursor position is

[1]

but total no. of citations are

[22] ...........

and i want to add 

[23]

at cursor position but it is coming as [1]. i don’t know what is wrong. 

thank you.