SharePoint and CAML query help

I have created a caml query that filters based on fiscal year (2016,2017,2 etc.).  The problem that I have is the results are wrong sometimes.
Below is my CAML query
 var prjQry = "<View>"+
							  	"<FieldRef Name='Design_x0020_Obligation_x0020_Da' />"+
							  		"<Value Type='Text'>"+vaFY+"</Value>"+
							  	"<FieldRef Name='Construction_x0020_Obligation_x0' />"+
							  		"<Value Type='Text'>"+vaFY+"</Value>"+
		    			 	"<FieldRef Name='Prioritization_x0020_Total' Ascending='True' />"+

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here's the result when filtered by '2017' which is correct:
caml query filter 1
here's the result when filtered by '2018' which is wrong.  I have no idea why data is being returned.
caml query 2
here's the result when filtered by '2020' which is correct:
caml qry 3
Any idea why the inconsistent behavior?

IsaacSharePoint Client Side DeveloperAsked:
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Jamie McAllister MVPCloud ExpertCommented:
Query looks OK. Are you sure the vaFY variable is filled with a value when filtering on 2018?

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IsaacSharePoint Client Side DeveloperAuthor Commented:
Yes it is
Jamie McAllister MVPCloud ExpertCommented:
OK, well I can't see the query being the issue. My only feeling looking at the screenshots and code was that if the variable didn't get filled and somehow matched N/A then you might see the behavior.

Can you output the variable value for display during running to be absolutely sure of the value?
IsaacSharePoint Client Side DeveloperAuthor Commented:
I don't think the variable is the problem.
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