I can't solve the wrong with a stop watch desiging

four keys(posedge keyclk touch off):

(1)reset:j=0,run=0;

(2)stop:run=~run;

(3)sec:j=j+100;

(4)min:j=j+6000;

sclk:50MHz(clk)->100HZ(sclk)

1% second count(posedge sclk touch off): j=j+1;---->ssclk touch off(avoid conflict between keyclk or ssclk)

I add the keyclk to the sensitivity list later(Sorry,I didn't know that error before),but have not any change.

I can't understand the sentence of"you can't build a counter from latches".

Can you explain it for detail.

I give a .doc file,to show a successful case.If you need the project,I will send it.

If the overall design is wrong ,how should I do it.I really have not any ideas now.