How do i show and update markers in two side-by-side webmaps?

I created 2 webmaps. I tried to use a simple loop to update a marker in each map. However, only the marker in the last webmap show up. See my code below:

wm_array{1} = webmap('WorldStreetMap');

wm_array{2} = webmap('WorldStreetMap');

Disp_Loc_Lat{1} = [MSP1(1); ]; % some lat for webmap1

Disp_Loc_Lon{1} = [MSP1(2); ]; % some lon for wemap1

Disp_Loc_Lat{2} = [CBRG(1)]; %some lat for webmap 2

Disp_Loc_Lon{2} = [CBRG(2)]; % some lon for webmap2

for i = 1 : 10

   for curMap = 1 : length(wm_array)

     wmmarker(wm_array{curMap}, Disp_Loc_Lat{curMap}, Disp_Loc_Lon{curMap}, ...
        'Description', ['test ' num2str(curMap) ' ' num2str(i)]);

   end
end