Hi Ola,
By default sticky resources are not available. You need to go to the Admin context and define a new resource class with some stickiness. See Server LoadBalancing Guide Chapter 5 p8. For example:
resource-class RC1
limit-resource all minimum 0.00 maximum unlimited
limit-resource sticky minimum 10.00 maximum equal-to-min
Obviously the amount of sticky resource to allocate will depend on your application.
And then you need to make the context that needs stickiness a member of that resource class.
For example:
context Test
allocate-interface vlan 292-293
member RC1
HTH
Cathy