Invalid neural network input - R client for Redis - neural-redis

Hi,
I have set up a R client for Redis using **rredis package** and I am trying to create a model on the examples given in the documentation. But when I use NR.OBSERVE, it throws an error saying **"ERR invalid neural network input: must be a valid float precision floating point number"** . For example I am using iris dataset to fit the model. NR.create works fine. NR.OBSERVE is throwing the issue I understand R does not have float datatype. What is the correct way of doing it.