How to make Cloth bind tearing delay?

[Sm3691]

Hello every one
I have a question about tearin
As i show you in the file below
I have a flag that i wanna tear it
But i need some frame wind blowing on flag and after that the flag start to tearing 
But as in the file, after flag touching the box ( surface test to activate cloth bind) the flag goes to start tearing
How can i make a delay for start tearing

[tyFlow]

Looks like you forgot to upload....don't forget to press the "Add attachment" button after choosing the attachment.

[Sm3691]

Looks like you forgot to upload....don't forget to press the "Add attachment" button after choosing the attachment.

Thank you
Yes that was my fault
Now attachment added
Please take a look

[tyFlow]

You can use a Modify Particles operator to set tearing ability on particles. So enable tearing in the Cloth Bind operator so that the cloth is setup to allow for tearing, then enable/disable it again in a Modify Bindings operator to match the timing you want.