A dropdown that turns off not available options?

Hi. I am trying to make an app for my job at a paint mixing facility. I work with a line of 14 main colors, but when a costumer wants a color not included, then I have to combine 2 or more (most of the time 3 or 4) basic colors to form a new one going by a recipe-like system of formulas with amounts in grams, using a weight scale for the mixing procedure.

The thing is I have a dropdown list with all the 14 basic colors where I would Iike to see only the ones I need for that particular recipe (i. e. no need for yellow colors in a purple mix or blue colors in a brown mix). HOwever, if I pass with one of the colors and taking off is not an option, a “recalculate” button should appear and allow to have a second round of pour-ins with the other colors (except for the one passed) being available again.

is it possible? Or am I dreaming high? Thanx in advance

CH

Is it possible to reduce the options depending on the particular recipe I select? Also, I*d like to have the options disaapear once I add each color. For instance, if I make a light purple, with blue, red and white, I start with a dropdown list of only 3 colors. After i have the needed amount of blue ready, the dropdown reduces to only 2, and after the last one the “status” changes to finished and the list resets for a new bucket of mix.

Subtract values from a list - AppSheet Help

NOT sure if it helps.

You need at least two referenced tables,

Please leave here names of the tables and fields you need, the rest is not necessary

Table 1 “Colbas” maning Basic Colors.

Table 2, Formulas, having a long series of “Basic Colors” from 5-15

table 3 “Pedidos” meaning “orders”

Table 4, “buckets” having the same long list of colors but only visible if >0 in Formulas.

Table 5: Detail_Buckets. MIx refers to the new color being made; Color refers to the basic colors from Table 1, where it is a Dropdown list showing all the basic catalog, where I only need the 4 that the formula calls for.

Mira el gif de este hilo, haber si es lo que buscas
https://www.googlecloudcommunity.com/gc/AppSheet-Q-A/How-can-I-copy-all-the-records-at-once-with-filter-ID/m-p/755320#M244737

por ejemplo en este caso al seleccionar un estudiante con un grado Kinder, solo muestra los registros de la tabla maestra de kinder, y segun valla agregando esta lista al estudiante, estos ya no se van mostrando porque ya se agregaron