Change field colour based on multiple if then else

Dear All,

Any idea why the following code results in the error:

if 'Current Inventory' > 'Total Count' then
styled("Inventory is SMALLER", "#ddeeff", "green", "dialog");
else
if 'Current Inventory' < 'Total Count' then
"Inventory is LARGER"
else
if 'Current Inventory' = 'Total Count' then
"Inventory is CORRECT"
end
end
end

Error message + copy of code has been attached.

Thanks,

Bas