Assuming the data is not in a format that can supply this number directly (ex sql database), you could put a counter on the features and them a sampler to get the last feature.

Alternatively you could use the Aggregator and set the count attribute.

Hi @rajendarkarra

If you wnat to know the number of register ( features ):

You can try to use the StatisticsCalculator . There is a option to get the number of features.

Thanks,

Danilo