"Type mismatch in input arguments" error when using "add_line()"

Hello !

I'm trying to connect a subsystem with a port with the function add_line() :

allOutportBlock = find_system(sprintf('%s/%s', component_NameValue, subsystem_NameValue),'BlockType','Outport');
for element = allOutportBlock(:)'
    add_block('simulink/Ports & Subsystems/Out1',[component_NameValue '/' block_name]);
    add_line(sprintf('%s',component_NameValue), element, sprintf('%s/%s',component_NameValue, block_name));
end

But i have the error "Type mismatch in input arguments" and i don't know where is the problem

Thanks you !