How to handle "[key1:value1,key2:value2]"

Hi [mention:25710eb09098448cbe7f3570455ba814:e9ed411860ed4f2ba0265705b8793d05] 

I have developed a solution that achieve this dynamically. Below is the code for your reference.

a!localVariables(
local!input: "[key1:value1,key2:value2,key3:value3,key4:value4]",
local!stripText: mid(local!input, 2, len(local!input) - 2),
local!tempString: split(split(local!stripText, ","), ":"),
local!dict: a!map(),
local!updatedMaps: a!forEach(
items: local!tempString,
expression: if(
mod(fv!index, 2) = 0,
{},
a!update(
local!dict,
fv!item,
index(local!tempString, fv!index + 1, null())
)
)
),
local!keys: a!flatten(
a!forEach(
items: local!updatedMaps,
expression: a!keys(fv!item)
)
),
a!update(
a!map(),
local!keys,
a!forEach(
items: local!updatedMaps,
expression: index(fv!item, a!keys(fv!item), null)
)
)
)

Where do you get this value from?

[mention:25710eb09098448cbe7f3570455ba814:e9ed411860ed4f2ba0265705b8793d05] , you can use the below code to convert you input string to a valid list of Map type variable and thn by using simple index function you can get the values based on the keys.

a!localVariables(
  local!input: substitute(
    substitute(
      "[key1:value1,key2:value2,key3:value3,key4:value4]",
      "[",
      ""
    ),
    "]",
    ""
  ),
  local!arrayOfText: split(local!input, ","),
  local!finalMap: a!flatten(
    a!forEach(
      items: local!arrayOfText,
      expression: a!localVariables(
        local!temp: split(fv!item, ":"),
        {
          a!map(key: local!temp[1], Value: local!temp[2])
        }
      )
    )
  ),
  index(
    local!finalMap.Value,
    wherecontains("key1", local!finalMap.key),
    ""
  )
)

If you can be sure that values won't have special character "]", you can use below code to get values.