Selected Orders Count - Constraint Rules

[cynthia]

Hi,
I want to constraint selected orders count

the number of count is 2, like i mark it

i want to run the rules if the selected order count = 1
i have use this constraint = [=‘{SELECTED ORDERS}’.indexOf(‘,’)] ; but it didn’t work

can you help me guys?
Thank you

[ilyas]

@cynthia

{SELECTED ORDERS}

{SELECTED ORDERS} = Order Id

[Bob_be]

Try:
{QUANTITY} Equals 1

[cynthia]

It’s work!
Thank you!