Qsys error : has write interface but no write control

Hi , I am trying to create a new component on Qsys , using my verilog code. The problem is that after I select the interfaces and the kind of signals , an error :"Has written interfaces but not write control" appear on component editor, and I don`t know how to fix it.

module count_freq( clk, asi_clk_50, test_pin, camera_clk, reset, sel  , count);
input clk, reset;
input  asi_clk_50, camera_clk, test_pin;
input  sel;
output  count  ;
reg  count, count_next ,count_camera, count_camera_next, count_50, count_50_next, count_test_pin, count_test_pin_next  ;
always@ (posedge camera_clk or posedge reset )
    
  if (reset) count_camera<=0;
      else count_camera<= count_camera_next;
always@ (posedge asi_clk_50 or posedge reset)
  if (reset) count_50 <=0;
       else count_50<=count_50_next;
always@ (posedge test_pin or posedge reset)
   if (reset) count_test_pin <= 0;
       else count_test_pin<= count_test_pin_next;
always@ (count_50 or sel)
    
   if (sel==0)    count_50_next= count_50+1;
         else count_50_next= count_50;
always@ ( count_test_pin or sel)
   
       if(sel==2)  count_test_pin_next= count_test_pin+1;
        else count_test_pin_next=count_test_pin;
always@ (count_camera or sel )
    
        if (sel==1)   count_camera_next= count_camera+1;
          else count_camera_next=count_camera; 
always@( posedge clk )
      if( sel==0)
          count<= count_50;
           else if (sel==1)
                count<= count_camera;
               else if (sel==2) 
                   count<=  count_test_pin;