Thanks once gain Melocik. I also derived another way from your hint. Which is very much similar to your work.
if(WebUI.verifyElementClickable(findTestObject(‘abc/button_next1’), FailureHandling.OPTIONAL))
{
WebUI.click(findTestObject(‘abc/button_next’), FailureHandling.OPTIONAL)
log.logInfo(" abc " + PageName[i])
}
else
{
KeywordUtil.markFailedAndStop(" abc " + PageName[i])
}