How to change the value of a variable?

Question

Mikrotik

Good afternoon, tell me how to change the value of a variable?

there is an ip for example 192.168.1.1, I want to display the value 192.168.1.100

I make a script
:: local a 192.168.1.1; :local b 99; :local c ($a + $b); :put $c
192.168.1.100

So it turns out, but if you do this:

:local a [ip dhcp-server network get number=[find comment~"defau"] gateway ]; :local b 99; :local c ($a + $b); :put $c
192.168.1.1;99

produces an unexpected response.

If you print

:local a [ip dhcp-server network get number=[find comment~"defau"] gateway ]; :local b 99; :local c ($a + $b); :put [typeof $a]; :put [typeof $b]; :put [typeof $c]

the answer will be:

array
num
array

I don't quite understand how to change the value of the $a variable to num or ip.

Answer 1

:pick ... 0

:local a [:pick [ip dhcp-server network get number=[find comment~"defau"] gateway] 0]; :local b 99; :local c ($a + $b); :put $c