How i can use cell variable?

[Mark_L_Stone]

Will multideimensional arrays do what you want? Read mcg’s answer at Cvx sdp mode and cell arrays

Also read https://www.mathworks.com/matlabcentral/answers/383562-using-cell-arrays-as-a-variable-in-cvx

If YALMIP does what you want, perhaps you should stay with that rather than trying to convert to CVX.