Pull specific data from API feed

[pigsfoot]

Hi,

I am trying to build a formula that uses some data pulled in from a webservice api.

This is the forumual

=WEBSERVICE("https://api.coinmarketcap.com/v1/ticker/ethereum/")

What i want to do is populate a cell with the current price in USD which is displayed as "price_usd";"343.114"

I have tried the filterxml formula by entering

=FILTERXML(B2,"//price_usd")

but all i get is an error.

Is there a way to do this.

Thanks