Added param $interval.
Added param $interval.

tanksha/external-tools,tanksha/external-tools,elggem/external-tools,tanksha/external-tools,opencog/external-tools,Selameab/external-tools,opencog/external-tools,tanksha/external-tools,ngeiswei/external-tools,ngeiswei/external-tools,opencog/external-tools,elggem/external-tools,opencog/external-tools,opencog/external-tools,elggem/external-tools,opencog/external-tools,Selameab/external-tools,Selameab/external-tools,elggem/external-tools,ngeiswei/external-tools,elggem/external-tools,Selameab/external-tools,opencog/external-tools,Selameab/external-tools,elggem/external-tools,Selameab/external-tools,tanksha/external-tools,tanksha/external-tools,ngeiswei/external-tools,tanksha/external-tools,ngeiswei/external-tools,ngeiswei/external-tools