l_compare function in MATLAB package Seislab 3.01

I have recently encountered a project that requires the use of the MATLAB package Seislab 3.01 in order to analyze well log data.

I have a problem concerning the l_compare function when I try to adjust the depth range of the logs. When I attempt to fix the depths to a certain range I get the following error:

Error using assign_input (line 116) There is a problem with the input arguments of function "l_compare".

Error in l_compare (line 95)

compare=assign_input(compare,argument(3:end));

Error in Project3 (line 48) l_compare({wellLog11,'RILD',{'depths',4500,5000}},...

The code that produces this error is as shown below:

l_compare({wellLog11,'RILD',{'depths',4500,5000}}, {wellLog11, 'RILM',{'depths',4500,5000}});

Is there anyone familiar with the Seislab package that can help me fix my error?

Thanks in advance,