Kodular firebase in Inside how to see if the value of the tag is in the list in item

Please help me to solve it

Show your firebase structure, give eg, we will tell you simplified blocks

In firebase example
Tag. Phone number
/
Friend
/
Value. Make a list friend

You have see that tag in blocks.
In value I made a friend list so how can I check is thing list or not.
Upper blocks not work

You are not calling the taglist under the bucket friend, instead you are calling the value of friend.

If the no value found under friend then this method will not work… firebase get value will not give any output

Do you want add the username or phone number under the bucker friend?

Do you use any firebase authendication? If not try to use firebase web component + dictionary(json) method . It will suits you best