# String Merge This function block merges multiple text inputs into a single combined string. Use it to build filenames, messages, labels, or any composite text from separate inputs. ## 📥 Inputs `String` — One of the text inputs to be merged. The block accepts multiple `String` inputs; the default layout provides two. ## 📤 Outputs `String` — The merged result produced by concatenating all provided inputs in left-to-right order. ## 🕹️ Controls `Input size` — Choose how many text inputs the block exposes. Increasing this will add more `String` inputs; decreasing will remove inputs. ## ⚙️ Running mechanism * On each run the block reads all available `String` inputs (in the order they appear) and concatenates them into a single text value. * The concatenated result is sent to the `String` output socket for downstream use. * If an input is empty or not provided, it contributes no characters to the final result (effectively treated as an empty string). ## 🎯 Features * Dynamic input count via the `Input size` control — tailor the number of text inputs to your use case. * Simple, deterministic concatenation — predictable ordering of parts makes it easy to build structured names and messages. * Lightweight and ideal for UI-level string assembly (filenames, labels, log lines). ## 📝 Usage tips * Arrange text parts left-to-right in the order you want them merged. * Use descriptive text inputs (for example: prefix, separator, counter, timestamp) to build clear filenames or identifiers. ## 💡 Tips and Tricks * Combine with `String Input` to allow manual entry of parts, then merge to form a final label or filename. * Use `Number Input` and `String Merge` together when you need incremental counters in filenames. * Add a timestamp by merging `Date-Time` (or values from `Date-Time List`) to create unique, traceable file names. * Create structured export records by merging fields and feeding the result into `Data to JSON` or `CSV Export` for logging. * Build dynamic image filenames (prefix + timestamp + index) with `String Merge` and use the result with `Image Logger` or `Image Write` to save images with meaningful names. * Combine with `Choose Folder` or `File/Folder Operations` to assemble full paths for file operations. ## 🛠️ Troubleshooting * If a merged output seems to be missing parts, check the number of active `String` inputs via the `Input size` control and ensure each input is connected or contains text. * If separators are missing, add explicit separator inputs (for example, a dash or underscore) between parts before merging.