SSRS Conditional Formatting with 3 Colours - reporting-services

Question

Trying to figure out conditional formatting for SSRS/Visual Studio and trying to get the figures to show this as an expression as follows;
Below benchmark needs to be Red
Above but within 5% needs to be Gold
More than 5% above needs to be Green
Benchmark 60%
Year 1 62.2%
Year 2 67.4%
Year 3 43.6%
First time in writing something like this so unsure what the best step is!
=iif("Textbox83" > "Textbox82", "SpringGreen", iif("Textbox83" < "Textbox82", "Red", iif("Textbox83" = "Textbox82" + 0.05,"Gold", "Transparent")))

Answer 1

A few things here..
Use SWITCH rather than nested IIFs, it much easier to read and debug.
You would normally work against the dataset fields rather than the textboxes displayed on the rendered report. If you do refence the textboxes, you probably have to convert the values to numeric before comparison
If you reference an object, either a dataset field or an rendered textbox, you must state the property you want, typical .Value
If this was being done against dataset fields you would do something like this
=SWITCH (
Fields!myValue.Value < Fields!Benchmark.Value, "Red",
Fields!myValue.Value <= (Fields!Benchmark.Value * 1.05), "Gold",
Fields!myValue.Value > (Fields!Benchmark.Value * 1.05), "Green",
True, Nothing
)
Switch stops at the first expression that results in True so the sequence of conditions is important. The final expression pair True, Nothing acts like an ELSE and returns nothing (which is the default backgroundcolor property, which appears as transparent)
If you wanted to replicate this using the textboxes (don't unless you really have to!) then it's basically the same but a bit more messy.
=SWITCH (
VAL(ReportItems!TextBox83.Value) < VAL(ReportItems!TextBox82.Value), "Red",
VAL(ReportItems!TextBox83.Value) <= (VAL(ReportItems!TextBox82.Value) * 1.05), "Gold",
VAL(ReportItems!TextBox83.Value) > (VAL(ReportItems!TextBox82.Value) * 1.05), "Green",
True, Nothing
)
The above is from memory and therefore untested but it should be OK.