Help me with find data in gsheet

[PH_M_DUY_HOANG (GK)]

i use spreadsheet extension
store user’s androidid in colum A (gsheet)
when screen initialize, i set androidID to textbox1.text
how i can find if textbox1.text have in colum a then … else …
i’ve try is in list?thing but it didn’t work .
Thank you

find.aia (471.8 KB)

[Still-learning (1-2-3-4...)]

it is very simple , with the help of web block use gviz method of checking

find_1.aia (472.7 KB)

this text bloxk and id i have used for testing. Just remove this block and add getDeviceId

[PH_M_DUY_HOANG (GK)]

Thank you very much, I would never forget your kindness @Still-learning