Simeple Question about script.

If there is a 11.png on the screen, click 100.png and do ~~~~
If there is a 22.png on the screen, click 200.png and do ~~~~

it means that searching image and clicking image are different.

if (exists("11.png", 1)) then
    existsClick("100.png")
    toast(there is 11 png)
end

if (exists("22.png", 1)) then
    existsClick("200.png")
    toast(there is 22 png)
end

but it always works! eventhough there is no 11.png or 22.png
always click 100.png and 200.png
whats wrong with my code?

and i want make one more thing.
Count Stars.png and do something.

if there is 1 stars.png do ~~~~
if there is 2 stars.png do ~~~~

then local stars=findAll(stars.png)
like this..??

please helpe me 
if i solve this, i can apply to many script.