Why do my Simulink PV module simulation characteristics appear this way?

I have tried to simulate a PV module with Simulink for a change in radiation and I am unable to get the characteristics.The P-V and I-V characteristics I am expecting are here . I used the repeating sequence for my voltage source and the repeating sequence stair for my insolation. I get incomplete characteristics such as the figures below.

_ . What could be the problem? I have changed the time values and output values for the repeating sequence source and the simulation time but without success. Anyone with an explanation?

[Emmanuel Tee]

I am writing to remind you forum members that I am still counting on your help. Thanks.

[Emmanuel Tee]

I have been able to resolve the problem. Thanks.

[Johanes Kasilima]

How did you resolve? I have same problem

[Ali Juma]

Following on the same.