Problem in Solving LMIs

Can someone please explain me this error??

Subscript indices must either be real positive integers or
logicals.

Error in cvx_extract (line 552)
Pd(Pr) = false;

Error in cvx_solve (line 26)
[ At, cones, sgn, Q, P, exps, dualized ] = cvx_extract(
shim.config, shim.name );

Error in cvx_finish (line 57)
[ status, result, bound, iters, tol ] = cvx_solve;

Error in cvx_end (line 11)
evalin( ‘caller’, ‘cvx_finish’ );

Subscript indices must either be real positive integers or
logicals.

Error in cvx_extract (line 552)
Pd(Pr) = false;

Error in cvx_solve (line 26)
[ At, cones, sgn, Q, P, exps, dualized ] = cvx_extract(
shim.config, shim.name );

Error in cvx_finish (line 57)
[ status, result, bound, iters, tol ] = cvx_solve;

Error in cvx_end (line 11)
evalin( ‘caller’, ‘cvx_finish’ );

A post was merged into an existing topic: Problem in solving a 16 LMI 21 Var eqn. ,