Concatenate Sensor Values

Configuration
1

I am looking to concatenate the value of several sensors into one new sensor. So for example,
pick4_1 = 8
pick4_2 = 9
pick4_3 = 2
pick4_4 = 2

new sensor = 8922

I expect to need to do this in a new value template. But am not sure exactly how to express it. The closest I could get was:

  - platform: template
    sensors:
      pick4:
        value_template: "{{ states('sensor.pick_4_number_1'),states('sensor.pick_4_number_2'),states('sensor.pick_4_number_3'),states('sensor.pick_4_number_4')}}"
        friendly_name: 'Pick 4 Lotto'

However, this returns as (‘8’, ‘9’, ‘2’, ‘2’)

Any modification from this point results in an unavailable value or just total nonsense. Someone please point me in the right direction. Thanks!

2 
 value_template: "{{ states('sensor.pick_4_number_1') ~ states('sensor.pick_4_number_2') ~ states('sensor.pick_4_number_3') ~ states('sensor.pick_4_number_4')}}"
3

THANK YOU! Worked perfect!

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