Error using LMS algorithm

i am getting the this as the error message

"Array formation and parentheses-style indexing with objects of class 'dsp.LMSFilter' is not allowed. Use objects of

class 'dsp.LMSFilter' only as scalars or use a cell array."

the input to the filter is a binary data of dimension 1x64 and the desired signal is a complex valued data of 40x10. i need to pass the signal through the lms filter

kinldy debug this error