ios driver xebium not supported?

[zmirza1]

I need to automate Mobile UI tests and for that i downloaded installed and started ios server.
i then tried to automate a simple test in xebium but i get errors ( BTW: i came up with the browser spec. just by looking up the internet and never saw a sample example for mac os). Any thoughts??
Can someone kindly provide a sample example on how to automated ios UI tests in xebium?
here is salenese for it:

| script | selenium driver fixture |
| start browser | {"remote": "http://0.0.0.0:5555/wd/hub", "device" : "iphone", "language": "en", "locale": "en_US", "CFBundleName": "InternationalMountains", "simulator": "true", "variation":"iPhone5s", "instruments": "true"} | on url | https://msn.com/ |
| do | open | on | /en/en#/ |
| check | is | assertTitle | MSN.com - Hotmail, Outlook, Skype, Bing, Latest News, Photos & Videos |
| check | is | assertTitle | MSN.com - Hotmail, Outlook, Skype, Bing, Latest News, Photos & Videos |
| ensure | do | verifyElementPresent | on | css=h3 |
| ensure | do | waitForElementPresent | on | css=h3 |
| ensure | do | verifyElementPresent | on | css=h3 |
| ensure | do | click | on | css=h3 |
| ensure | do | waitForElementPresent | on | css=div.buttonLargeWhite |
| ensure | do | verifyElementPresent | on | css=div.buttonLargeWhite |
| stop browser |

Here is the error:

EXCEPTION:java.lang.RuntimeException: Unknown browser type. Should be one of 'firefox', 'iexplore', 'chrome', 'opera', 'opera-mobile-tablet', 'opera-mobile-phone', 'htmlUnit' or 'htmlUnit+js'
at com.xebia.incubator.xebium.DefaultWebDriverSupplier.newWebDriver(DefaultWebDriverSupplier.java:104) [file:/xebia-Xebium-4d74eea/target/classes/]
at com.xebia.incubator.xebium.SeleniumDriverFixture.defaultWebDriverInstance(SeleniumDriverFixture.java:87) [file:/xebia-Xebium-4d74eea/target/classes/]
at com.xebia.incubator.xebium.SeleniumDriverFixture.startBrowserOnUrl(SeleniumDriverFixture.java:159) [file:/xebia-Xebium-4d74eea/target/classes/]