TLS Server Name Indication iRule giving me error message

I needed to implement this rule that I was able to find at: https://devcentral.f5.com/tutorials/tech-tips/multiple-certs-one-vip-tls-server-name-indication-via-irules

Altough it looks strait forward, the iRule is erroring out and I'm not sure why. I would really appriciate some guidence.

Here is the error message I'm getting:

line 114: [wrong args] [set ssl_profile [class match -value ]string tolower $tls_servername[ equals tls_servername]]

line 114: [wrong args] [class match -value ]

line 114: [undefined procedure: equals] [equals tls_servername]

line 115: [wrong args] [set tls_pool [class match -value ]string tolower $tls_servername[ equals tls_servername_pool]]

line 115: [wrong args] [class match -value ]

I tried to create a real basic setup to troubleshoot, here is what I have:

class tls_servername {

{

"test.active1.com" { "zoom.cert1.local" }

"test.active2.com" { "zoom.cert2.remote" }

}

}

class tls_servername_pool {

{

"test.active1.com" { "Apache_v1_80" }

"test.active2.com" { "Apache_v2_80" }

}

}

My 2 pools:

pool Apache_v1_80 {

monitor all http

members 192.168.1.55:28501 {}

}

pool Apache_v2_80 {

monitor all http

members 192.168.1.55:28501 {}

}