Optimization of triangular MF's using genetic algorithm

I have been trying to optimize the value of my membership functions by using genetic algorithm in optimization toolbox. The error shown every time is *Optimization running. Error running optimization. Illegal parameters in fisTriangleMf() --> b > c* I am trying to find a way of how to avoid this error. Can someone sugeest??? I have made 3 files objective,fuzzyboils and drumboilerdynamics. we call the objective function in the optimization toolbox and use genetic algorithm. The three variables which we are trying to optimize are k1,k2 and k3. The codes are attached below

[anissa selmani]

 can you help me please if you had already found the solution? i have the same problem