Survey123 Connect if/concat

[DionysiosKerasidis1]

Hi everyone 

I am relatively new in survey123 and i am struggling to achieve something if anyone can help.

The concept is very simple.

Based on the answer above i want the ID to start with either TP-(numbers)   or BM-(numbers) depending what the feature is. Alphanumerical ID

i am using this calculation but no luck for sometime now.

if(selected(${Feature_Type}, 'Trial Pit', concat('TP', '-', ${Feature_Type}))), concat('BM', '-', ${Feature_Type})

i would really appreciate any help.

Thank you

[JeffSilberberg]

I am struggling with any number of issues as well,  but in this one I thin it might be an out of place coma. 

if(selected(${Feature_Type} = "Trial Pit", concat('TP', '-', ${Feature_Type}))), concat('BM', '-', ${Feature_Type})

for if (condition, TRUE, FALSE)

https://community.esri.com/t5/arcgis-survey123-questions/conditional-if-then-else-logic-in-survey123...

[DougBrowning · Accepted solution]

Your parentheses are off and you are using selected a bit off.

You can do selected(question, value) or question = value but you have them intermixed.

if(selected(${Feature_Type}, "Trial Pit"), concat('TP', '-', ${Feature_Type}), concat('BM', '-', ${Feature_Type}))

or

if(${Feature_Type} = "Trial Pit", concat('TP', '-', ${Feature_Type}), concat('BM', '-', ${Feature_Type}))

Note this will give you BM- even when the field is empty.  If you want it to stay blank until they pick something you can do.

if(selected(${Feature_Type}, "Trial Pit"), concat('TP', '-', ${Feature_Type}), if(selected(${Feature_Type}, "Bellmouth"), concat('BM', '-', ${Feature_Type}), "")

Hope that helps

[DionysiosKerasidis1]

thank you so much Doug, i slightly amended your formula and it did do what i needed.

i really appreciate your time to help.