How to simultaneously access two arrays indexes for a curl request in Bash for loop?

In Bash i am trying to query country currencies from http://free.currencyconverterapi.com/api/v5/convert?q=USD_GBP and update my OpenEdge API automatically without Hard coding the symbols. meaning I have to curl and save currency symbols from my API in an array and curl and save the values from the currency converter API. after that i want to run two for loops simultaneously or access the indexes of two arrays at the same time in order to run the API call that requires the

url/rest/USD/12


kind of input.

In bash I am calling a curl that returns

ZAR USD EUR BWP CHF GBP


from my API in one line. Then i save that result in a variable called currency

jsonEnd="_ZAR.val"
symbolEnd="_ZAR"


I then run

values=()
for j in ${currency[*]};
do
${values[j]}=$(curl -X GET -H "Content-type: application/json" http://free.currencyconverterapi.com/api/v5/convert?q=${currency[j]}$symbolEnd&compact=y | jq '.${currency[j]}$jsonEnd')
done


To get the currency values into an array where '_ZAR.val' is a from a json result, tried to point at "val" with jq

{
"USD_ZAR": {
"val": 14.23065
} }


at last i am trying to run a POST Curl which needs the relative currency symbol found above like USD with a value to update. in this form

curl -X PUT -H "Content-Type: application/json" -H "Authorization: $context" http://192.168.xxx.xxx:8080/rest/exchangerates/USD/12


i tried this

for i in ${values[@]}
do
curl -X PUT -H "Content-Type: application/json" -H "Authorization: $context" http://192.168.xxx.xxx:8080/rest/exchangerates/${currency}/${values}
done


i can't get it right, the errors include

curl: (6) Could not resolve host: USD_ZAR


etc I am new to bash

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