Hi. I am very new to Appian and have started testing out differen SAILS Receipe

Hi. I am very new to Appian and have started testing out differen SAILS Receipes. Works very nicely, but I have run into a problem with the forum.appian.com/.../SAIL_Recipes.html. I have attached the expression and the interface form as txt files. I am getting the following error when in the interface designer: Could not display interface. Please check definition and inputs.

Interface Definition: Expression evaluation error in rule 'ucitemroweach' at function a!applyComponents [line 34]: Invalid index: Cannot use more indexes than levels of value (1 index level(s) too many)

I have created the rules input as described in the Receipes and show on attached image. Any ideas?

EditGridExample.txt

OriginalPostID-205743

OriginalPostID-205743