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Question

Sorry for the massive amount of questions, 
 
 but I do not understand this error message: 
 Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error at function a!dropdownField [line 978]: A dropdown component [label=&ldquo;Symbol Modifier 1&rdquo;] has an invalid value for &ldquo;value&rdquo;. All selected values must be present in the choiceValues array, but value was 00 and choiceValues was 00.

here is my full drop down: 
 
 a!dropdownField(
 label: "Symbol Modifier 1",
 labelPosition: "JUSTIFIED",
 placeholder: "--- Select a Value ---",
 
 choiceLabels: {
 choose(
 wherecontains(local!mod1, local!modList),
 
 "1",
 local!airmod1.firstmodifier,
 local!airmmod1.firstmodifier,
 local!spacemod1.firstmodifier,
 local!spacemmod1.firstmodifier,
 
 local!landUnitmod1.firstmodifier,
 local!civLandmod1.firstmodifier,
 local!landEquipmod1.firstmodifier,
 local!landInstall.firstmodifier,
 ("not here"),
 local!SeaSurface.firstmodifier,
 local!SeaSubSurface.firstmodifier,
 local!activities.firstmodifier,
 local!signals.firstmodifier,
 
 ) 
 },
 choiceValues: choose(
 wherecontains(local!mod1, local!modList),
 tostring("00"),
 local!airmod1.code,
 local!airmmod1.code,
 local!spacemod1.code,
 local!spacemmod1.code,
 
 local!landUnitmod1.code,
 local!civLandmod1.code,
 local!landEquipmod1.code,
 local!landInstall.code,
 
 tostring("00"),
 local!SeaSurface.code,
 local!SeaSubSurface.code,
 local!activities.code,
 local!signals.code,
 ), 
 value: tostring("00"),
 /*if(*/
 /*rule!APN_isEmpty(ri!Symbol.symbMod1),*/
 /*"00",*/
 /*ri!Symbol.symbMod1*/
 /*),*/
 saveInto: {ri!Symbol.symbMod1,a!save(local!symbMod1,ri!Symbol.symbMod1)},
 searchDisplay: "AUTO",
 showWhen: not(rule!APN_isEmpty(local!mod1)),
 validations: {}
 ) 
 
 I am trying to get a string representation of 00 
 I have tried using "00" and tostring("00") 
 
 I think it has to be how the choose or the where contains functions work because I have hard coded the same value in and it is still giving me the same error message. 
 
 I have tried changing the value and the error message changes so that is not it. 
 
 thanks in advance for your assistance, 
 
 Kevin

Mike Schmitt · Accepted Answer

I might be somewhat misunderstanding your use case. What is the complete value, specifically, of " local!airmod1.firstmodifier ", for example? 
 Regarding "00" - that's a valid string and you don't need to wrap it in "toString()", however I'm not understanding what you're trying to accomplish by injecting it into the middle of your choiceValues choose() list. If the choose() evaluates in such a way that "00" is the choicevalue, I would expect the dropdown to not necessarily cooperate since it expects an array to be provided for both choiceValues and choiceLabels. 
 For the dictionary I mentioned - you would put this as another local variable definition within a!localVariables and after all the ones you have already (or at least after any it refers to).

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