Play/single/substract

HTML	RESULT
{sequence even, rows=5} {$sequence} {/sequence}	2 4 6 8 10
{sequence subtract=4, rows=10} {$sequence} {/sequence}	-3 -2 -1 0 1 2 3 4 5 6
{sequence even, subtract=4, rows=5} {$sequence} {/sequence}	-2 0 2 4 6