Doubt regarding bocks in voice flow

i am not getting how to create a variable

i am getting this.there is no side block for variables.
please tell how to solve this problem.

@ishakaushik1231 There is no separate block to create variables. You can simple create it other blocks available in Voiceflow by typing the variable name under curly braces. For example, if you want to create a variable names text, you do it by typing {text}, this will give you a dropdown with options to either create a variable or list the variable if it already exists.

I was asking how did the area that is marked red came in voice flow.
As u can see in my previous image which i sent earlier this is not there.
So,how will i get it to name my variable in brackets. because if i will not click at it i will not be able to name my variable.