IF controller (radio button/counter) and Loop Controller in Jmeter - jmeter

Question

I'd like to practice IF controller basically as follow:
TEST_PLAN
+Thread_group: (user: 3, ramp: 3, loop:2)
+Loop_Controller(loop:4)
++ HTTP request1: go to page_1
+IF_Controller1
++ HTTP request2: go to page_2
++ counter (config element)
+IF_Controller2
++ HTTP request3: click Back button
My condition "HTTP request 2" is only executed if loop (output "Loop_Controller" >4). How to do that ?
And, for IF_Controller2: it's will be executed after each of question on this page has checked (page has 5 questions, 1 question has 5 answer radio button.)
I also follow the Counter element and Counter functions, but don't know how to combine them?
and one more things: to use the variable in IF statement, they should be put on previous activities ? (in my case: IF controller: ${count}, thereby variable "count" should be put on HTTP request 1)
Thanks,

Answer 1

You need to place COUNTER as a child of Loop Controller, not If Controller. In this case you'll get the following scenario:
HTTP Request 1 (loop 1)
HTTP Request 1 (loop 2)
HTTP Request 1 (loop 3)
HTTP Request 1 (loop 4)
** HERE we're getting out of Loop Controller and go to 2nd Loop of Thread Group, If controller doesn't fire as counter value is 4 and condition is >4**
HTTP Request 1 (loop 5)
HTTP Request 1 (loop 6)
HTTP Request 1 (loop 7)
HTTP Request 1 (loop 8)
** HERE counter value is 8 and If controller condition is met so **
HTTP Request 2
Being child of If Controller counter isn't getting incremented
Counter Configuration:
Start: 1
Increment: 1
Reference Name: N
If Controller Configuration:
${N} > 4
See How to use JMeter's 'IF' Controller and get Pie guide for more details.